CN215101251U

CN215101251U - Surface air bag inflatable shaft

Info

Publication number: CN215101251U
Application number: CN202121398193.2U
Authority: CN
Inventors: 覃广发
Original assignee: Foshan Yujing Technical Co ltd
Current assignee: Foshan Yujing Technical Co ltd; Yujing Technology Co Ltd
Priority date: 2021-06-22
Filing date: 2021-06-22
Publication date: 2021-12-10
Anticipated expiration: 2031-06-22

Abstract

The utility model discloses a surface air bag physiosis axle, include: the air inlet structure comprises a shaft body, a plurality of air inlets and a plurality of grooves, wherein the air inlets extend along the axis direction, the outer wall of the shaft body is provided with a groove and a cavity, the groove extends along the axial direction of the shaft body, the bottom wall of the groove is provided with an air inlet channel, the air inlet channel is communicated with the air inlets, and the cavity and the groove are arranged in a staggered manner; the air bag is arranged in the groove and communicated with the air inlet channel; the key bar is arranged in the groove, the axis of the shaft body is taken as the opposite inner side, and the key bar is positioned on the outer side of the air bag; and the rolling body is rotatably arranged in the cavity, and the outer wall of the rolling body protrudes out of the outer wall of the shaft body. The utility model discloses a surface gasbag physiosis axle, coiled material and rolling element contact, the rolling element rotates and helps the coiled material to remove for the axis body, and the help coiled material breaks away from the axis body or the help coiled material is placed on the axis body, helps getting and puts the coiled material. The utility model discloses can be applied to in the physiosis axle field.

Description

Surface air bag inflatable shaft

Technical Field

The utility model relates to an physiosis axle field, in particular to surface gasbag physiosis axle.

Background

The inflatable shaft is a special winding and unwinding shaft, namely a shaft with a protruded surface after high-pressure inflation, and a shaft with a quickly retracted surface part after deflation is called the inflatable shaft. The surface air bag air-expanding shaft is evenly provided with a plurality of air bags and key strips on the outer surface of the shaft body, so that the expanding force on the periphery of the surface air bag air-expanding shaft is even.

And, on the outer wall of axis body was located to the gasbag, made the staff can change the gasbag of damage rapidly, at surperficial gasbag physiosis axle rolling or unreel the in-process, the staff takes off the coiled material and replaces the coiled material again after the gasbag. However, the weight of the coiled material is large, and the surface air bag air inflation shaft is difficult to take and place the coiled material.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a surface air bag physiosis axle to solve one or more technical problem that exist among the prior art, provide a profitable selection or create the condition at least.

The technical scheme adopted for solving the technical problems is as follows:

a surface airbag inflation shaft comprising:

the air inlet structure comprises a shaft body, a plurality of air inlets and a plurality of grooves, wherein the air inlets extend along the axis direction, the outer wall of the shaft body is provided with a groove and a cavity, the groove extends along the axial direction of the shaft body, the bottom wall of the groove is provided with an air inlet channel, the air inlet channel is communicated with the air inlets, and the cavity and the groove are arranged in a staggered manner;

the air bag is arranged in the groove and communicated with the air inlet channel;

the key bar is arranged in the groove, the axis of the shaft body is taken as the opposite inner side, and the key bar is positioned on the outer side of the air bag;

and the rolling body is rotatably arranged in the cavity, and the outer wall of the rolling body protrudes out of the outer wall of the shaft body.

The utility model has the advantages that: during the recess of axis body outer wall was located to gasbag and keybar, the change of the gasbag of being convenient for and keybar, and be equipped with the rolling element in the cavity of axis body outer wall, damage the back when gasbag or keybar, when needing to get and put the coiled material, the axial promotion coiled material along the axis body, the outer wall evagination in the outer wall of axis body of rolling element, then coiled material and rolling element contact, the rolling element rotates and helps the coiled material to remove for the axis body, help the coiled material break away from the axis body or help the coiled material to place on the axis body, help getting and putting the coiled material.

As a further improvement of the above technical solution, there are a plurality of the cavities, all the cavities are distributed at intervals, there are a plurality of the rolling bodies, and the rolling bodies and the cavities are arranged in one-to-one correspondence.

Cavity interval distribution, the rolling element sets up with the cavity one-to-one to it has a plurality of rolling elements to distribute on the outer peripheral face of messenger's axis body, and a plurality of rolling element combined action separate the outer peripheral face of coiled material with the axis body, thereby makes to take place rolling friction between coiled material and the rolling element, makes the coiled material remove more smoothly for the axis body, and the getting of the coiled material of being convenient for is put.

As a further improvement of the above technical solution, all the rolling elements are uniformly distributed along the axial direction and the circumferential direction of the shaft body.

All rolling elements are evenly distributed along the axial direction and the axial direction of the shaft body, when the coiled material is taken from and placed on the shaft body, the stress between the plurality of rolling elements on the outer wall of the shaft body is even, and the damage caused by the fact that a certain rolling element is pressed greatly is avoided.

As a further improvement of the above technical solution, the rolling element includes a rotating shaft and a pulley, two ends of the rotating shaft are connected to inner walls of two sides of the cavity, an axial direction of the rotating shaft is perpendicular to an axial direction of the shaft body, the pulley is rotatably sleeved on the rotating shaft, and an outer wall of the pulley protrudes out of an outer wall of the shaft body.

The axial of pivot is perpendicular with the axial of axis body to make the rotation axial of pulley perpendicular with the axial of axis body, the pulley can be along the axial transport coiled material of axis body promptly, makes the coiled material can more smoothly remove along the axial of axis body, the getting of the coiled material of being convenient for is put.

As a further improvement of the above technical scheme, the bottom wall of the cavity is provided with a clearance groove, the pulley extends into the clearance groove, the rolling element further comprises a gland embedded into the cavity, the gland is detachably connected with the cavity, the bottom of the gland limits the rotating shaft in the cavity, a clearance hole is formed in the middle of the gland, and the outer wall of the pulley penetrates through the clearance hole and extends out of the outer wall of the shaft body.

Utilize the gland to be spacing in the cavity with the pivot, the pulley passes the gland keep away a hole and stretch out in the outer wall of axis body, and the gland can dismantle to connect in the cavity, when the rolling element damages, can dismantle the gland and change the rolling element.

As a further improvement of the above technical solution, the groove extends rearward along the axis of the shaft body and penetrates through the rear end surface of the shaft body, the surface airbag inflation shaft further includes an end cap detachably connected to the rear end surface of the shaft body, and the end cap seals the rear end of the groove.

The end cover detachably connects in the rear end face of axis body and the rear end of closing cap recess, when needing to change gasbag or key strip, directly takes out gasbag or key strip from the recess behind the dismantlement end cover, makes the change of gasbag and key strip more convenient.

As a further improvement of the above technical scheme, the groove is a T-shaped groove, the keybar includes a clamping portion and a protruding portion, the shape of the clamping portion matches with the shape of the groove, the thickness of the clamping portion is smaller than the depth of the groove, the clamping portion is limited in the groove, the protruding portion is located outside the clamping portion, and the width of the protruding portion is smaller than the width of the notch of the groove.

The recess is T type groove, utilize joint portion to be spacing in the recess with the keybar, the thickness of joint portion is less than the degree of depth of recess, thereby make the keybar outwards or inwards remove along the recess, and the width of bellying is less than the notch width of recess, then when the keybar outwards removed along the recess, the notch that the bellying passed the recess stretches out in the axis body outside, make the keybar realize protruding or the function of retrieving, joint portion can restrict the bellying distance of bellying, thereby avoid the bellying evagination to damage the coiled material too much.

As a further improvement of the above technical scheme, the surface airbag inflation shaft further comprises two pressing blocks, the pressing blocks are matched with the grooves in shape, the two pressing blocks are arranged in the grooves, two ends of the airbag are open, the two pressing blocks respectively press and seal two ends of the airbag, and an air inlet nozzle is arranged in the middle of the airbag and connected with the air inlet channel.

The suction nozzle at the middle part of the air bag is communicated with the air inlet channel, the two ends of the air bag are open, and the pressing block is utilized to press and seal the two ends of the air bag, so that the structure of the air bag is simple, the sealing and sewing positions at the two ends of the air bag are reduced, and the cost is saved.

As a further improvement of the above technical solution, the groove is provided with at least two screw holes, the two screw holes are respectively located at two ends of the airbag, the pressing block is provided with a screw, and the screw penetrates through the pressing block and is screwed into the screw holes.

The pressing block is locked in the screw hole of the groove by using the screw, so that the pressing block more tightly presses the tail end of the air bag, and the sealing performance of the tail end of the air bag is improved.

As a further improvement of the above technical solution, the number of the grooves is plural, all the grooves are uniformly distributed along the axial direction of the shaft body, the number of the air bags and the number of the keybars are plural, and the air bags and the keybars are arranged in the grooves in a one-to-one correspondence.

A plurality of recesses are along the axial evenly distributed of axis body, and the gasbag sets up in the recess with the keybar one-to-one, and a plurality of gasbags and keybar evenly distributed are promptly on the outer peripheral face of axis body, and each gasbag all aerifys through same inlet port, and all gasbags are aerifyd fairly evenly to make surface gasbag physiosis axle can provide even bloated tight power.

Drawings

The present invention will be further explained with reference to the drawings and examples;

FIG. 1 is a schematic view of an embodiment of a surface airbag inflation shaft provided by the present invention;

FIG. 2 is a schematic cross-sectional view A-A of FIG. 1;

fig. 3 is a schematic cross-sectional view of an embodiment of a surface airbag inflation shaft provided by the present invention.

100. The air bag structure comprises a shaft body, 110, air inlet holes, 120, grooves, 121, an air inlet channel, 130, a concave cavity, 131, a spacing groove, 200, an air bag, 300, a key strip, 310, a clamping part, 320, a protruding part, 400, a rolling body, 410, a rotating shaft, 420, a pulley, 430, a pressing cover, 431, a spacing hole, 500, an end cover, 600, a pressing block, 610 and a screw.

Detailed Description

This section will describe in detail the embodiments of the present invention, preferred embodiments of the present invention are shown in the attached drawings, which are used to supplement the description of the text part of the specification with figures, so that one can intuitively and vividly understand each technical feature and the whole technical solution of the present invention, but they cannot be understood as the limitation of the protection scope of the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, if words such as "a plurality" are used, the meaning is one or more, the meaning of a plurality of words is two or more, and the meaning of more than, less than, more than, etc. is understood as not including the number, and the meaning of more than, less than, more than, etc. is understood as including the number.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

Referring to fig. 1 to 3, the surface airbag inflation shaft of the present invention makes the following embodiments:

the surface air bag inflatable shaft comprises a shaft body 100, an air bag 200, a key bar 300, a rolling body 400, an end cover 500 and a pressing block 600. The axial direction of the shaft body 100 is the fore-and-aft direction, the appearance of the shaft body 100 is a cylinder, the front end surface of the shaft body 100 is provided with an air inlet 110, and the air inlet 110 extends backwards along the axis of the shaft body 100. The outer wall of the shaft body 100 is provided with a groove 120, the groove 120 extends along the axial direction of the shaft body 100, the groove 120 extends backwards and penetrates through the rear end face of the shaft body 100, the bottom wall of the front end of the groove 120 is provided with an air inlet channel 121, and the air inlet channel 121 extends along the radial direction of the shaft body 100 and is communicated with the air inlet 110. The number of the grooves 120 is three, the three grooves 120 are uniformly distributed along the circumferential direction of the shaft body 100 at intervals, that is, one groove 120 is arranged on the outer circumferential surface of the shaft body 100 at intervals of 120 degrees, the grooves 120 are T-shaped grooves, and the cross section of each groove 120 is in an inverted T-shaped structure. The outer wall of the shaft body 100 is further provided with a plurality of concave cavities 130, all the concave cavities 130 are staggered with the grooves 120, and all the concave cavities 130 are evenly distributed at intervals along the axial direction and the circumferential direction of the shaft body 100. Nine pockets 130 are provided, and every three pockets 130 are aligned in the axial direction of the shaft body 100, and three rows of pockets 130 are evenly spaced in the circumferential direction of the shaft body 100. The bottom wall of the cavity 130 is provided with a position-avoiding groove 131, and the position-avoiding groove 131 is a circular arc groove.

The air bag 200 is a strip structure with two open ends, and the middle part of the air bag 200 is provided with an air inlet nozzle which is communicated with the inside and the outside of the air bag 200. The air bladder 200 is inserted into the recess 120 from the rear end of the recess 120, and the shape of the air intake nozzle of the air bladder 200 matches the shape of the air intake passage 121, and the air intake nozzle is inserted into the air intake passage 121 so that the air bladder 200 communicates with the air intake passage 121. The number of the air bags 200 is three, and the three air bags 200 are correspondingly arranged in the three grooves 120.

The key bar 300 is inserted into the groove 120 from the rear end of the groove 120, the key bar 300 is arranged on the outer side of the airbag 200, the key bar 300 is composed of a clamping portion 310 and a protruding portion 320, the clamping portion 310 is in an inverted T shape, the clamping portion 310 abuts against the outer side face of the airbag 200, and the protruding portion 320 is arranged on the outer side of the clamping portion 310. The shape of the clamping portion 310 is matched with the shape of the groove 120, so that the clamping portion 310 is limited in the groove 120, the thickness of the clamping portion 310 is smaller than the depth of the groove 120, the clamping portion 310 can move outwards or inwards along the groove 120, the width of the protruding portion 320 is smaller than the width of the notch of the groove 120, and when the clamping portion 310 moves outwards or inwards along the groove 120, the protruding portion 320 extends out of the notch of the groove 120 or the protruding portion 320 is recycled into the groove 120. There are three keybars 300, and the three keybars 300 are disposed in the three grooves 120 in a one-to-one correspondence.

The shape of briquetting 600 and the shape of recess 120 match, and briquetting 600 is the type of falling T, and briquetting 600 inserts in the recess 120 from the rear end of recess 120, and briquetting 600 has six, and an gasbag 200 uses with two briquetting 600 cooperations, and two briquetting 600 are located the both ends mouth department of gasbag 200 respectively. The bottom wall of each groove 120 is provided with two screw holes, the positions of the two screw holes correspond to the positions of two ports of the air bag 200, and the screw 610 penetrates through the pressing block 600 and is screwed into the screw holes, so that the pressing block 600 is pressed against and seals the tail end of the air bag 200. The two pressing blocks 600 respectively press both ends of the air bag 200 to close both ends of the air bag 200.

End cover 500 is discoid, and the rear end face of axis body 100 is equipped with the screw hole, and the middle part of end cover 500 is equipped with the through-hole that corresponds with the screw hole, utilizes the screw to pass and connects in the screw hole behind the through-hole to make end cover 500 detachably connect in axis body 100, and the outer peripheral face of end cover 500 flushes with the outer peripheral face of axis body 100, and end cover 500 closing cap recess 120's rear end promptly avoids briquetting 600, key strip 300, gasbag 200 in the recess 120 to deviate from the rear end.

Compressed gas is filled in from the air inlet holes 110, the gas flows into the air bag 200 through the air inlet holes 110, the air inlet channel 121 and the air inlet nozzle, so that the air bag 200 is expanded and supports the keybars 300, and the convex parts 320 of the keybars 300 extend out of the shaft body 100, so that the keybars 300 expand the coiled material. When the coiled material needs to be unwound, gas is discharged from the gas inlet holes 110, the gas in the air bag 200 flows out to the outside along the gas inlet nozzle, the gas inlet channel 121 and the gas inlet holes 110, so that the air bag 200 is shrunk, the protruding parts 320 of the keybars 300 are recovered into the grooves 120, and the keybars 300 unwind the coiled material.

The plurality of rolling bodies 400 are arranged in the cavity 130 in a one-to-one correspondence manner, each rolling body 400 is composed of a rotating shaft 410, a pulley 420 and a gland 430, two ends of the rotating shaft 410 are respectively abutted against inner walls of two sides of the cavity 130, the axial direction of the rotating shaft 410 is perpendicular to the axial direction of the shaft body 100, the pulley 420 is rotatably sleeved on the rotating shaft 410, one side of the pulley 420 extends into the avoiding groove 131 of the cavity 130, the other side of the pulley 420 protrudes out of the outer wall of the shaft body 100, and the rotating axial direction of the pulley 420 is perpendicular to the axial direction of the shaft body 100. The pressing cover 430 is inserted into the cavity 130, the pressing cover 430 is connected with the cavity 130 through screws, the bottom of the pressing cover 430 is abutted against the rotating shaft 410, and the pressing cover 430 limits the rotating shaft 410 in the cavity 130. The middle of the pressing cover 430 is provided with a position-avoiding hole 431, the position of the position-avoiding hole 431 corresponds to the position of the pulley 420, and the pulley 420 passes through the position-avoiding hole 431 and then extends out of the shaft body 100.

After the gas exhaust hole of the airbag 200, when the coiled material needs to move along the axial direction of the shaft body 100, the inner cylinder of the coiled material contacts with the pulleys 420, the inner cylinder of the coiled material is separated from the outer wall of the shaft body 100 by the plurality of pulleys 420, the coiled material is pushed to move relative to the pulleys 420, and rolling friction is formed between the coiled material and the surface airbag inflation shaft, so that the coiled material can move more smoothly relative to the shaft body 100.

In some embodiments, the grooves 120 and the key bars 300 are matched in various ways, for example, the cross-sectional shape of the grooves 120 is a trapezoid with a large outer side and a small inner side, the shape of the key bars 300 is matched with the grooves 120, the cross-sectional shape of the key bars 300 is also a trapezoid with a large outer side and a small inner side, the key bars 300 are pushed to move outwards along the grooves 120 when the airbag 200 inflates, and the width of the bottoms of the key bars 300 is larger than the width of the notches of the grooves 120, so that the outward protruding distance of the key bars 300 is limited.

In some embodiments, the rolling elements 400 may be of various types, for example, the cavity 130 is a spherical cavity, the rolling elements 400 are spherical balls, the rolling elements 400 are embedded in the cavity 130, the outer wall of the rolling elements 400 extends out of the shaft 100 through the cavity 130, and the rolling elements 400 may rotate in the cavity 130; or, the rolling element 400 is a cylinder, shaft holes are respectively formed on the inner walls of the two sides of the cavity 130, the two ends of the rolling element 400 are rotatably disposed in the shaft holes, and the outer wall of the rolling element 400 passes through the cavity 130 and protrudes out of the shaft body 100.

While the preferred embodiments of the present invention have been described in detail, it will be understood by those skilled in the art that the invention is not limited to the details of the embodiments shown, but is capable of various modifications and substitutions without departing from the spirit of the invention.

Claims

1. A surface air bag inflatable shaft is characterized in that: the method comprises the following steps:

the air inlet structure comprises a shaft body (100), an air inlet hole (110) extending along the axis direction is formed in the shaft body (100), a groove (120) and a concave cavity (130) are formed in the outer wall of the shaft body (100), the groove (120) extends along the axial direction of the shaft body (100), an air inlet channel (121) is formed in the bottom wall of the groove (120), the air inlet channel (121) is communicated with the air inlet hole (110), and the concave cavity (130) and the groove (120) are arranged in a staggered mode;

an air bag (200) arranged in the groove (120), wherein the air bag (200) is communicated with the air inlet channel (121);

a key bar (300) which is provided in the groove (120), and which is located on the outer side of the airbag (200) with the axis of the shaft body (100) as the opposite inner side;

and the rolling body (400) is rotatably arranged in the cavity (130), and the outer wall of the rolling body (400) protrudes out of the outer wall of the shaft body (100).

2. The surface airbag inflator of claim 1, wherein: the rolling bodies (400) are arranged in one-to-one correspondence with the concave cavities (130).

3. The surface airbag inflator of claim 2, wherein: all the rolling bodies (400) are uniformly distributed along the axial direction and the circumferential direction of the shaft body (100).

4. The surface airbag inflator of claim 1, wherein: the rolling element (400) includes pivot (410) and pulley (420), the both ends of pivot (410) connect in the both sides inner wall of cavity (130), the axial of pivot (410) with the axial vertical of axis body (100), pulley (420) rotationally the cover is located pivot (410), the outer wall protrusion of pulley (420) in the outer wall of axis body (100).

5. The surface airbag inflator of claim 4, wherein: the bottom wall of cavity (130) is equipped with keeps away a groove (131), pulley (420) stretch into keep away in groove (131), rolling element (400) still include gland (430), gland (430) embedding in cavity (130), gland (430) with cavity (130) can be dismantled and be connected, the bottom of gland (430) will pivot (410) are spacing in cavity (130), the middle part of gland (430) is equipped with keeps away a hole (431), the outer wall of pulley (420) passes keep away hole (431) stretch out in the outer wall of axis body (100).

6. The surface airbag inflator of claim 1, wherein: the groove (120) extends backwards along the axis of the shaft body (100) and penetrates through the rear end face of the shaft body (100), the surface air bag inflatable shaft further comprises an end cover (500), the end cover (500) is detachably connected to the rear end face of the shaft body (100), and the end cover (500) covers the rear end of the groove (120).

7. The surface airbag inflator of claim 6, wherein: recess (120) are T type groove, keybar (300) include joint portion (310) and bellying (320), the shape of joint portion (310) with the shape of recess (120) cooperatees, the thickness of joint portion (310) is less than the degree of depth of recess (120), joint portion (310) be spacing in recess (120), bellying (320) are located the outside of joint portion (310), the width of bellying (320) is less than the notch width of recess (120).

8. The surface airbag inflator of claim 7, wherein: the surface air bag air inflation shaft further comprises pressing blocks (600), the shape of the pressing blocks (600) is matched with that of the groove (120), the number of the pressing blocks (600) is two, the two pressing blocks (600) are arranged in the groove (120), two ends of the air bag (200) are open, the two pressing blocks (600) are respectively pressed against and sealed at two ends of the air bag (200), and an air inlet nozzle is arranged in the middle of the air bag (200) and connected with the air inlet channel (121).

9. The surface airbag inflator of claim 8, wherein: the groove (120) is provided with at least two screw holes which are respectively positioned at two ends of the air bag (200), the pressing block (600) is provided with a screw (610), and the screw (610) penetrates through the pressing block (600) and is screwed into the screw holes.

10. The surface airbag inflator of claim 1, wherein: the number of the grooves (120) is multiple, all the grooves (120) are uniformly distributed along the axial direction of the shaft body (100), the number of the air bags (200) and the number of the key bars (300) are multiple, and the air bags (200) and the key bars (300) are arranged in the grooves (120) in a one-to-one correspondence mode.