CN106428470A - Automatic rapid deflation device for miniature gas cylinder - Google Patents

Abstract

The automatic and quick deflation device of the miniature gas cylinder provided by the present invention comprises a control circuit, an electric steering gear, an end face cam, a needle, a return spring, a connector and a gas cylinder, the control circuit controls the rotation of the electric steering gear, and the electric steering gear The machine drives the end face cam to rotate, and the end face cam drives the lancet to compress the return spring to move linearly along the cylindrical cavity and pierce the bottle mouth of the gas cylinder; when the electric steering gear passes over the After reaching the highest point of the end face cam, the lancet returns under the force of the return spring, and the gas in the gas cylinder is quickly released from the mouth of the gas cylinder to realize rapid and automatic deflation. The automatic quick deflation device is small in size, light in weight, fast inflating speed and not restricted by space, suitable for a wide range.

Description

Automatic and quick deflation device for miniature gas cylinders

technical field

The invention relates to the technical field of rapid inflation systems such as human body safety airbags and life jackets, in particular to an automatic rapid deflation device for miniature gas cylinders.

Background technique

With the growth of age and the aging of the body, falls often bring great damage to the body of the elderly, and sometimes the consequences are even fatal. A fall is defined as a sudden, involuntary, involuntary change in position, falling onto the ground or a lower surface than the initial position. Falls are very common among the elderly, seriously affecting the health and independent living ability of the elderly, and causing psychological stress and fear in the elderly. Research on fall protection and product development have also attracted a large number of scientific and technological workers. At present, Tamura et al. (Tamura T, Yoshimura T, Sekine m, Uchida M, Tamura O.A wearable airbag to prevent fall injuries. In: IEEE Transactions on Information Technology in Biomedicine, 2009, 13:910–914) from Chiba University in Japan and in Hong Kong Chinese University (Shi Guangyi, Cheung Shing Chan, Zhang Guanglie, et al., Towards amobile airbag system using MEMS sensor and embedded intelligence.In:International Conference on Robotics and omimetics.2007:634-639) have studied the human body protection airbag system , but failed to popularize and apply due to technical reasons. One of the main technical problems to be solved by the human body airbag is the problem of rapid inflation. Generally, research shows that the inflation system must be inflated within about 500ms in order to achieve the purpose of protecting the human body. Although the automobile airbag technology is relatively mature, because it generates gas by chemical reaction, although the response speed is fast, it will emit a lot of heat and noise when deflated, and its gas generating device is also large in size and weight, which is not suitable for airbags. applied to the human body. The inflation technology of water lifejackets is relatively mature, but most of them are manually controlled or automatically controlled by water-soluble materials, and are not suitable for use on human body protection airbags.

Inflatable life jackets are widely used in passenger and cargo ships, yachts, military, marine police, water anti-smuggling boats, water construction operations, offshore drilling platforms, flood fighting and disaster relief, salvage and flood control, piloting, hydrology, water conservancy and other fields. At present, inflatable life jackets are widely used because of the advantages of easy portability, etc., but the inflation method is generally to pull the pull cord on the inflatable device to realize manual control or to automatically control CO2 gas into the air bag to generate buoyancy by water-soluble materials. If the physical state of the material is changed to achieve work, there are inevitably the following defects: 1. There is a risk of failure if it is damp under high temperature and high humidity conditions; The spring is released slowly, so that the steel cylinder cannot be broken down or the breakdown is insufficient; 3. The water-soluble material has a service life of 2 to 3 years at a time, resulting in higher regular maintenance costs for the inflatable life jacket. This kind of inflatable life jacket rarely has electric automatic control products, so its intelligence is not high, and it cannot fully enjoy the development achievements of microelectronic technology and computer technology, which also has a certain impact on the reliability of the product.

At present, there is no deflation device specially aimed at human body safety airbags on the market, which seriously affects the development and promotion of human body protection airbag products.

Contents of the invention

In view of this, it is necessary to address the defects in the prior art to provide an automatic quick deflation device with small size, light weight, fast inflation speed and the use of miniature gas cylinders that are not limited by space.

To achieve the above object, the present invention adopts the following technical solutions:

An automatic and quick deflation device for miniature gas cylinders, comprising: a control circuit, an electric steering gear electrically connected to the control circuit, an end cam electrically connected to the electric steering gear, and an end cam connected to the end cam. The needle, the return spring sleeved on the needle, the joint and the gas cylinder, the same end surface of the joint is separated from the first small hole and the second small hole connected with the first small hole, the gas cylinder The bottle is fixedly connected to the joint through the first small hole, and a third small hole is opened on the end surface of the joint opposite to the first small hole, and the needle is arranged in the third small hole Inside, and the third small hole forms a passage through the cylindrical cavity and the first small hole, and the centers of the first small hole, the third small hole and the cylindrical cavity are on the same horizontal plane; wherein:

The control circuit controls the rotation of the electric steering gear, the electric steering gear drives the end cam to rotate, and the end cam drives the lancet to compress the return spring to move linearly along the cylindrical cavity and pierce the The bottle mouth of the gas cylinder; when the electric steering gear has passed the highest point of the end cam, the needle returns under the force of the return spring, and the gas in the gas cylinder is released from the gas cylinder The mouth of the bottle is quickly released to achieve rapid and automatic deflation.

In some embodiments, a connecting piece is also included, and the connecting piece is fixedly connected to both the electric steering gear and the joint.

In some embodiments, the control circuit includes a boost circuit and a drive circuit, the boost circuit is electrically connected to an external battery, and the boost circuit is used to convert the low voltage of the battery into the electric rudder The drive circuit is electrically connected to the microprocessor, and the drive circuit is used to convert the output signal of the microprocessor into an electrical signal for driving the electric steering gear.

In some embodiments, the end cam includes a flat end surface and a convex surface with a smooth curved surface, and a through hole with a tooth groove is opened between the end surface and the convex surface, and the through hole is connected to the electric steering gear The teeth of the shaft cooperate, and when the electric steering gear drives the end cam to rotate, one end of the needle slides along the convex surface of the end cam, thereby pushing the needle to move in a straight line.

In some embodiments, the convex surface of the end cam has two or more protrusions.

In some embodiments, the puncture needle comprises two concentric cylinders with different diameters, wherein the apex of the cylinder with a smaller diameter is inclined, and the apex of the cylinder with a larger diameter is spherical.

In some embodiments, a steel ball is installed on the top of the cylinder with a large diameter.

In some embodiments, the small-diameter cylinder is also provided with a through hole penetrating from the top to the side.

In some embodiments, the needle is made of alloy steel.

In some embodiments, the cylinder stores compressed liquid _CO2 .

The present invention adopts the advantage of above-mentioned technical scheme to be:

The automatic quick deflation device of the miniature gas cylinder provided by the present invention comprises a control circuit, an electric steering gear, an end face cam, a needle, a return spring, a joint and a gas cylinder, the control circuit controls the rotation of the electric steering gear, and the The electric steering gear drives the end cam to rotate, and the end cam drives the lancet to compress the return spring to move linearly along the cylindrical cavity and pierce the mouth of the gas cylinder; when the electric steering gear After crossing the highest point of the end face cam, the lancet returns under the force of the return spring, and the gas in the gas cylinder is quickly released from the mouth of the gas cylinder to realize rapid and automatic deflation. The provided automatic quick deflation device is small in size, light in weight, fast inflated, free from space restrictions, and suitable for a wide range of applications.

Description of drawings

Fig. 1 is a schematic structural diagram of an automatic quick deflation device for a miniature gas cylinder provided by an embodiment of the present invention.

Fig. 2 is a partial structural schematic diagram of the automatic quick deflation device for the miniature gas cylinder provided by the embodiment of the present invention.

Fig. 3 is a structural schematic diagram of the joint of the automatic quick deflation device for the miniature gas cylinder provided by the embodiment of the present invention.

Fig. 4 is a schematic structural view of the end face cam of the automatic quick deflation device for the miniature gas cylinder provided by the embodiment of the present invention.

Fig. 5 is a schematic structural view of the puncture needle of the automatic quick deflation device for the miniature gas cylinder provided by the embodiment of the present invention.

detailed description

Please refer to FIG. 1 to FIG. 5 , which is an automatic quick deflation device for a miniature gas cylinder provided by an embodiment of the present invention, including a control circuit 110, an electric steering gear 120 electrically connected to the control circuit 110, and an electrical connection The end face cam 130 of the electric steering gear 120 , the needle 140 connected to the end face cam 130 , the return spring 150 sleeved on the needle 140 , the joint 160 and the gas cylinder 170 . in:

The control circuit 110 includes a boost circuit 111 and a drive circuit 112, the boost circuit 111 is electrically connected to an external battery 113, and the boost circuit 111 is used to convert the low voltage of the battery 113 to drive the The voltage required by the electric steering gear 120, the driving circuit 112 is electrically connected to the microprocessor 114, and the driving circuit 112 is used to convert the output signal of the microprocessor 114 into an electric voltage for driving the electric steering gear 120. Signal. It can be understood that since the electric steering gear 120 can output a relatively large torque with a small volume and voltage, and has a very fast response, a boost circuit and a drive circuit are designed for the electric steering gear 120, which solves the problem of the electric steering gear and The matching of the power supply voltage and the matching of the electric steering gear and the driving signal of the microprocessor facilitates the connection of the device with various application systems and simplifies the system design.

The end face cam 130 includes a flat end face 131 and a convex surface 132 with a smooth curved surface, and a through hole 133 with a tooth groove is opened between the end face 131 and the convex surface 132, and the through hole 133 is connected to the electric steering gear 120 When the electric steering gear 120 drives the end cam 130 to rotate, one end of the needle 140 slides along the convex surface 132 of the end cam 130, thereby pushing the needle to move in a straight line, effectively Improve the stability of the end face cam 130 pushing the needle 140 to puncture the gas cylinder 170 .

Preferably, the convex surface of the end cam 130 has two or more protrusions. It can be understood that the convex surface 132 of the end cam 130 can have two or more protrusions to form multiple strokes, that is, the lancet can be pushed to puncture the gas cylinder 170 multiple times during the rotation of the end cam 130, so that the gas cylinder can be guaranteed Being completely pierced improves the reliability of rapid gas release.

The needle 140 includes two concentric cylinders with different diameters. The cylinder 141 with a small diameter has a beveled top, and the cylinder 142 with a large diameter has a spherical top. The needle 140 is made of alloy steel. It can be understood that when the thrust is constant, the top of the cylinder 141 with a small diameter is inclined, the pressure is greater, and it is easier to pierce the film of the gas cylinder bottle mouth, while the top of the cylinder 142 with a large diameter is spherical, which is conducive to reducing the disc-shaped Friction between cams reduces wear.

Preferably, a steel ball is installed on the top of the cylinder 142 with a large diameter. It can be understood that since the top of the large-diameter cylinder 142 is also equipped with a steel ball, the needle 140 and the end cam 130 form rolling friction, which can greatly reduce the radial force and wear, and improve the stability of the mechanism.

Preferably, the small-diameter cylinder 141 is also provided with a through hole penetrating from the top to the side. It can be understood that a hole is opened in the center of the end face of the small-diameter cylinder 141 of the needle 140 to penetrate to the side of the cylinder, so as to prevent the needle from being stuck after piercing the gas cylinder and unable to deflate smoothly. When the needle 140 is stuck, the gas cylinder The gas in the needle can be released from the end face of the needle, and then the gas is released from the air outlet.

A first small hole 161 and a second small hole 162 communicating with the first small hole 161 are spaced apart on the same end surface of the connector 160 .

Wherein, the gas bottle 170 is fixedly connected to the joint 160 through the first small hole 161 . Preferably, the first small hole 161 is provided with a rotating thread, through which the mouth of the gas cylinder 170 can be fixedly connected to the first small hole 161 .

A third small hole 163 is also opened on the end surface of the joint 160 opposite to the first small hole 161, the needle 140 is arranged in the third small hole 163, and the third small hole 163 passes through The cylindrical cavity 164 forms a channel with the first small hole 161 , and the centers of the first small hole 161 , the third small hole 163 and the cylindrical cavity 164 are on the same horizontal plane.

Preferably, the diameter of the third small hole 161 is larger than the diameter of the cylindrical cavity 164 but smaller than the diameter of the first small hole 161, which can increase the pressure of the entire space and facilitate the rapid release of gas.

It can be understood that when the control circuit 110 controls the electric steering gear 120 to rotate, the electric steering gear 120 drives the end face cam 130 to rotate, and the end face cam 130 drives the needle 140 to compress the return spring 150 along the The cylindrical cavity 164 makes a linear motion, and punctures the bottle mouth of the gas cylinder 170; when the electric steering gear 120 passes over the highest point of the end cam 130, the lancet 140 moves under the pressure of the return spring 150 Returning under force, the gas in the gas cylinder 170 is quickly released from the mouth of the gas cylinder 170 through the second small hole 162 to realize rapid and automatic deflation.

Preferably, the main function of the gas cylinder 170 is to store compressed gas. Gas cylinder 170 is filled with compressed liquid CO ₂ . It can be understood that carbon dioxide is an inert gas, non-flammable and non-explosive, relatively stable and safer than hydrogen and oxygen, and its critical temperature is also significantly higher than other compressed gases, so compressed carbon dioxide gas is selected as the gas source . At the same time, its cost is low and it is very easy to obtain in the market, and there are different specifications such as 8g, 12g, 16g, 22g, etc., which can meet the occasions with different inflation requirements.

Preferably, a connecting piece 180 is further included, and the connecting piece 180 is fixedly connected to both the electric steering gear 120 and the joint 160 . It can be understood that since the end face cam 130 drives the lancet 140 to pierce the gas cylinder 170 requires a relatively large force, naturally the reaction force to the electric steering gear 120 is also relatively large, and an internal thread hole can be opened on the connecting piece 180 to lock the electric steering gear 120 The connection with the joint 160 can effectively prevent loosening from affecting the execution of the mechanism.

The automatic and fast deflation device for miniature gas cylinders provided by the present invention includes a control circuit 110, an electric steering gear 120, an end face cam 130, a needle 140, a return spring 150, a joint 160 and a gas cylinder 170, and the control circuit 110 controls the electric motor. The steering gear 120 rotates, the electric steering gear 120 drives the end face cam 130 to rotate, and the end face cam 130 drives the needle 140 to compress the return spring 150 to move linearly along the cylindrical cavity 164, and pierce the the bottle mouth of the gas cylinder 170; when the electric steering gear 120 has passed the highest point of the end cam 130, the needle 140 returns under the force of the return spring 150, and the gas in the gas cylinder 170 Quickly released from the bottle mouth of the gas cylinder to realize rapid and automatic deflation. The automatic rapid deflation device provided by the application is small in size, light in weight, fast inflating speed and not restricted by space, and has a wide range of applications.

In addition, the present invention uses the electric steering gear to generate action, realizing the electric automatic control of deflation, and the control circuit designed at the same time can be conveniently matched with the current, voltage, and driving load of various microprocessor systems, and it is easy to realize intelligent automatic control .

Because the present invention adopts electric control, it can be used in the air and on land, and can also be used in water when the seal is good, and the application occasions are not limited, and the suitable range is wide.

In addition, the present invention uses fewer parts and has small volume and mass, so it can be used not only on equipment, but also on portable equipment used by the human body.

At the same time, because the electric steering gear is a specially designed actuator, it not only has a large torque, but also has a very fast response. The present invention adopts the electric steering gear as the executive component, combined with other mechanisms designed in the invention, so that the response speed of the above-mentioned automatic rapid deflation device is extremely fast, and the gas can be discharged within 300ms.

Of course, the automatic quick deflation device of the miniature gas cylinder of the present invention can also have multiple transformations and modifications, and is not limited to the specific structure of the above-mentioned embodiment. In a word, the protection scope of the present invention shall include those transformations, substitutions and modifications obvious to those skilled in the art.

Claims (10)

1. a kind of automatic rapid degassing apparatus of miniature gas cylinder are it is characterised in that include：Control circuit, be electrically connected at described The electric steering engine of control circuit, be electrically connected at described electric steering engine edge cam, be connected to described edge cam pricker, Be sheathed on back-moving spring on described pricker, joint and gas cylinder, on the identical end face of described joint interval offer the first aperture and The second orifice connecting with described first aperture, described gas cylinder is fixedly connected on described joint by described first aperture, 3rd aperture is further opened with the end face relative with described first aperture on described joint, it is little that described pricker is arranged at the described 3rd In the hole, and described 3rd aperture passes through cylindrical cavity and described first keyhole formation passage, and described first aperture, the 3rd aperture And the center of circle that described cylindrical cavity is located is in same level；Wherein：

Described control circuit controls described electric steering engine rotation, and described electric steering engine drives described edge cam to rotate, described end Face cam drives described pricker to compress described back-moving spring and moves along a straight line along described cylindrical cavity, and punctures the bottle of described gas cylinder Mouthful；After the peak of described edge cam crossed by described electric steering engine, described pricker is under the active force of described back-moving spring Return, the gas in described gas cylinder is released quickly through described second orifice from the bottleneck of described gas cylinder, realizes fast automatic putting Gas.

2. the automatic rapid degassing apparatus of miniature gas cylinder according to claim 1 are it is characterised in that also include connector, Described connector is fixedly connected with described electric steering engine and described joint.

3. the automatic rapid degassing apparatus of miniature gas cylinder according to claim 1 are it is characterised in that described control circuit bag Include booster circuit and drive circuit, described booster circuit is electrically connected at external connection battery, described booster circuit is used for described electricity The low-voltage in pond is transformed into the described electric steering engine required voltage of driving, and described drive circuit is electrically connected at microprocessor, institute State drive circuit for the output signal of described microprocessor is changed into the electric signal driving described electric steering engine.

4. the automatic rapid degassing apparatus of miniature gas cylinder according to claim 1 are it is characterised in that described edge cam bag Include a smooth end face and the convex surface with smooth surface, have the through hole with teeth groove, institute between described end face and convex surface The tooth stating through hole with described electric steering engine axle matches, when described electric steering engine drives described edge cam to rotate, described thorn Slide along the convex surface of described edge cam in one end of pin, thus promoting described pricker along rectilinear movement.

5. the automatic rapid degassing apparatus of miniature gas cylinder according to claim 4 are it is characterised in that described edge cam Convex surface has two or more projections.

6. the automatic rapid degassing apparatus of miniature gas cylinder according to claim 1 are it is characterised in that described pricker includes two Duan Tongxin but the different cylinder of diameter, wherein, the top of the little cylinder of diameter is in inclined-plane, and the top of the big cylinder of diameter is in ball Face.

7. the automatic rapid degassing apparatus of miniature gas cylinder according to claim 6 are it is characterised in that the big circle of described diameter The top of post is also equipped with steel ball.

8. the automatic rapid degassing apparatus of miniature gas cylinder according to claim 6 are it is characterised in that the little circle of described diameter Post is further opened with extending through the through hole of side from top.

9. the automatic rapid degassing apparatus of miniature gas cylinder according to claim 6 are it is characterised in that the material of described pricker For steel alloy.

10. the automatic rapid degassing apparatus of miniature gas cylinder according to claim 1 are it is characterised in that described gas cylinder internal memory Contain liquid CO of compression₂.