KR101747671B1 - Airbag gas inflating device - Google Patents

Abstract

An air bag gas injection device is disclosed in which an air bag gas injection device of the present invention includes a sensor part for sensing an external impact, a swing part for triggering a sphere in response to detection of the sensor part, And a cartridge including a compressed gas for inflating the air bag, wherein, by the blow of the ball of the triggered sphere, the cartridge breaks the cover and the compressed gas Can be discharged.

Description

[0001] AIRBAG GAS INFLATING DEVICE [0002]

The present invention relates to an air bag gas injection apparatus.

Generally, elderly people and patients who are uncomfortable to move are much weaker than healthy young people, so they are dangerous places such as stairs, sloping places such as hills, and winter ice roads, as well as living rooms, Even in a relatively safe place such as a flat plain, a falling accident that loses its balance when walking directly on foot can occur frequently.

To prevent such a situation, equipment that protects the elderly from external shocks is being studied. Conventionally, there is a method of injecting a compressed gas into an air bag by blowing a cartridge inlet by an explosion generated by reacting with an electric spark and a gunpowder, and a trigger which fixes the spring and the pressing plate in a compressed state. When the fall of the human body is detected, A method has been proposed in which compressed gas is blown into the airbag by breaking the cartridge and blowing the pressure plate caused by releasing the fixation.

However, the method using gunpowder can not recycle air-injected cartridges, and a large amount of noise may be generated due to the explosion of gunpowder. In the method using the pressing plate, friction with the case during the triggering of the pressing plate may occur and the energy transmitted to the ball may be reduced. Also, if the weight of the pressure plate can not be ensured, the energy hitting the ball may not be fully transmitted. If the cartridge is not broken in spite of the impact of the pressure plate, the protective device does not perform its role and can lead to serious injury of the human body.

The background technology of the present application is disclosed in Korean Patent Registration No. 0583188 (registered on May 18, 2006).

SUMMARY OF THE INVENTION It is an object of the present invention to provide an air bag gas injection device capable of detecting a fall of a human body and expanding an air bag.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an air bag gas injector capable of ensuring the reliability of cartridge failure by minimizing the friction generated in the process of transferring energy capable of breaking the cartridge .

SUMMARY OF THE INVENTION It is an object of the present invention to provide an air bag gas injection device capable of reducing the size of a device and improving wearing comfort by having a compact structure.

It should be understood, however, that the technical scope of the embodiments of the present invention is not limited to the above-described technical problems, and other technical problems may exist.

As a technical means for achieving the above technical object, an airbag gas injecting apparatus according to an embodiment of the present invention includes a sensor unit for sensing an external impact, a triggering unit for triggering a sphere in response to detection of the sensor unit, A cartridge including a inflator including a moving path through which a sphere moves and a ball disposed at an end of the moving path and a compressed gas for inflating the air bag, The cartridge is able to break the cover and discharge the compressed gas.

According to one embodiment of the invention, the pointed portion at the distal end of the ball is opposed to the cover, and the ball may be triggered to strike the back of the ball.

According to an embodiment of the present invention, the inflator includes a connection portion detachably coupled to the cartridge such that the cover is disposed opposite the end of the ball, and an injection port formed between the cover and the airbag and connected to the airbag .

According to an embodiment of the present invention, the triggering unit selectively fixes the sphere to prevent the sphere from entering the movement path of the sphere. According to one embodiment of the present invention, the triggering unit includes a driving force providing unit for providing a driving force to the trigger unit, And an elastic member which keeps the spherical body in a compressed state in a state where the spherical body is fixed so as to provide a triggering force to the spherical body. By driving the trigger unit, the spherical body can be released and triggered.

According to an embodiment of the present invention, the sensor unit includes a fall sensor for detecting a fall of a human body to generate a fall signal, and the trigger unit may be powered by receiving power corresponding to the fall signal.

According to one embodiment of the present application, the movement path may include a curved path having a predetermined radius of curvature such that the triggered spheres are orbited.

According to one embodiment of the present invention, the curved path may be formed by bending such that the distal end of the movement path on which the spherical droplet is introduced and the distal end of the movement path on which the ball is disposed are located on the same side.

According to an embodiment of the present invention, it is possible to further include a protective housing that receives the cartridge and the sensor unit.

According to one embodiment of the present invention, the sensor unit is disposed on the leading end side of the movement path,

The cartridge may be disposed at a distal end of the movement path, and the curved path of the movement path may be formed by bending with a predetermined radius of curvature such that the sensor portion and the cartridge are adjacent to each other.

The airbag according to one embodiment of the present invention may include an airbag air injection device.

The above-described task solution is merely exemplary and should not be construed as limiting the present disclosure. In addition to the exemplary embodiments described above, there may be additional embodiments in the drawings and the detailed description of the invention.

According to the above-mentioned problem solving means of the present invention, it is possible to provide an air bag gas injecting apparatus capable of sensing the fall of a human body and inflating the air bag.

According to the above-mentioned problem solving means of the present invention, it is possible to provide an air bag gas injecting apparatus for discharging a compressed gas into an air bag by breaking a cover of a cartridge containing compressed gas at the time of fall detection.

According to the present invention, there is also provided an air bag infusion device capable of minimizing (reducing) friction generated in the energy transfer process and transferring a high mass energy capable of sufficiently breaking the cover, Can be provided.

According to the present invention, there is also provided an air bag gas injection apparatus capable of forming a movement path having a curved path and saving the space in the air bag by arranging the sensor unit and the cartridge on the same side.

1 is a block diagram of an air bag gas injection apparatus according to one embodiment of the present application.
2 is a cross-sectional view of an airbag gas injection apparatus according to one embodiment of the present application.
3 is a perspective view of an air bag gas injection apparatus according to an embodiment of the present invention.
4A is a cross-sectional view of an air bag gas injection apparatus according to the first embodiment of the present invention;
4B is a cross-sectional view of an air bag gas injection apparatus according to a second embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention. It should be understood, however, that the present invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In the drawings, the same reference numbers are used throughout the specification to refer to the same or like parts.

Throughout this specification, when a part is referred to as being "connected" to another part, it is not limited to a case where it is "directly connected" but also includes the case where it is "electrically connected" do.

It will be appreciated that throughout the specification it will be understood that when a member is located on another member "top", "top", "under", "bottom" But also the case where there is another member between the two members as well as the case where they are in contact with each other.

Throughout this specification, when an element is referred to as "including " an element, it is understood that the element may include other elements as well, without departing from the other elements unless specifically stated otherwise.

FIG. 1 is a block diagram of an air bag gas injection apparatus according to one embodiment of the present application, and FIG. 2 is a sectional view of an air bag gas injection apparatus according to an embodiment of the present invention.

Referring to FIG. 1, an air bag gas injection apparatus 100 may include a sensor unit 110, a blowing unit 120, an inflator 130, and a cartridge 140.

The sensor unit 110 can sense an external impact. The sensor unit 100 can generate a signal based on an external impact. The sensor unit 110 may include a fall sensor that senses a fall of a human body and generates a fall signal. The fall sensor may include, for example, an inertial sensor, a piezoelectric sensor, and a string switch. When the fall sensor is an inertial sensor, a fall signal can be generated when the magnitude of the inertial force generated by the external shock exceeds the threshold value. Further, when the fall sensor is a piezoelectric sensor, a fall signal can be generated when the magnitude of the voltage generated by the external shock exceeds the threshold value. When the fall sensor is a string switch, a fall signal can be generated when a conductive line (string) is broken by an external impact. The fall sensor can be an inertial sensor, a piezoelectric sensor and a string switch, as well as various sensors capable of detecting fall of a human body.

The triggering unit 120 may trigger the sphere 150 according to the detection of the sensor unit 110. The triggering unit 120 may trigger the sphere 150 based on the fall signal generated by the sensor unit 110. [ The triggering unit 120 may also include a trigger unit 121, a driving force providing unit 122, and an elastic member 123. The sphere 150 is an object having spherical durability and may be formed of a material such as metal, aluminum, plastic, etc., and may have a predetermined weight. However, the sphere 150 is only one embodiment, and the material or weight of the sphere 150 may be variously changed. According to one embodiment of the present disclosure, by utilizing the sphere 150, friction generated on the path traveled by the triggered sphere 150 is minimized and loss of energy possessed by the triggered sphere 150 can be minimized . Further, by having the spherical body 150 have a predetermined weight, the ball 132, which will be described later, can transfer energy to the ball 132 that can break the cover 141. [

The trigger unit 121 can selectively fix the sphere 150 to prevent the sphere 150 from entering the movement path 131. The movement path 131 may include a curved path having a predetermined radius of curvature, as shown in FIG. 2, in which the spherical body 120 triggered by the triggering part 120 moves. The description of the movement path 131 will be described later. The trigger unit 121 can maintain the state of the sphere 150 fixed and can be driven by the driving force providing unit 122 to release the sphere 150 from being unlocked.

The driving force providing unit 122 may provide a driving force to the trigger unit 121. [ The driving force providing unit 122 can provide the driving force so that the trigger unit 121 can release the fixation of the sphere 150. [ The driving force providing unit 122 may be, for example, a motor unit that provides rotational force, but is not limited thereto. The driving force providing unit 122 may be a unit that provides various driving forces for releasing the locking of the spherical member 150 . Illustratively, the driving force providing unit 122 can provide the rotational force generated in the motor unit to the trigger unit 121. [ The trigger unit 121 can be rotated by the rotational force provided from the motor unit to release the fixation of the sphere 150. [

4A is a cross-sectional view of an airbag gas injection device according to a first embodiment of the present invention, and FIG. 4B is a cross-sectional view of an airbag gas injection device according to a second embodiment of the present invention.

Referring to FIG. 4A, the trigger unit 121 supports the sphere 150, so that the sphere 150 can be held stationary so as not to enter the movement path 131. When the sensor unit 110 senses fall of the human body, the driving force providing unit 122 provides a driving force to the trigger unit 121 so that the trigger unit 121 is driven as shown in FIG. 4B, The fixing unit 150 can be released.

The elastic member 123 may maintain a compressed state with the sphere 150 being fixed so as to provide a triggering force to the sphere 150 upon releasing the sphere 150. [ The elastic member 123 may be, but is not limited to, a spring capable of providing an elastic (percussion) force, for example. As shown in Fig. 2, as the sphere 150 is fixed by the trigger unit 121, the elastic member 123 can also be fixed in the compressed state. When the spherical member 150 is released from the fixation of the elastic member 123 by the trigger unit 122, the elastic member 123 can be restored to the compressed state and can provide the trigger force to the spherical member 150.

The triggering unit 120 can be driven by supplying power in response to the fall signal. According to one embodiment of the present application, the air bag gas injection apparatus 100 may include a power supply unit. The power supply unit may be various types of units for supplying power, such as a replaceable battery or a rechargeable battery. When the fall signal is generated in the sensor unit 110, the triggering unit 120 can receive power from the power supply unit in response to the fall signal. The triggering unit 120 can drive the driving force providing unit 122 with the power supplied from the power supply unit and can control the trigger unit 121 to release the fixing of the sphere 150. [ The sphere 150 can be released by being driven by the trigger unit 121 and triggered. When the spherical body 150 is unfixed, the spherical body 150 may be triggered by the elastic force of the elastic member 123.

The inflator 130 may include a movement path 131 on which the triggered sphere 150 moves and a ball 132 disposed on the end of the movement path 131. The triggered sphere 150 may move along the movement path 131 to strike the ball 132. The struck hole 132 may break the cover 141 of the cartridge 140 to discharge the compressed gas contained in the cartridge 140. [

First, referring to the movement path 131, the movement path 131 may include a curved path having a predetermined curvature radius so that the triggered spherical object 150 is turned. Referring to FIG. 2, the triggered sphere 150 may be pivoted along the curved path. Illustratively, the triggered sphere 150 may proceed along a U-turn path that is 180 degrees in the direction of travel. In other words, the curved path is a path formed by bending the tip of the movement path 131 in which the triggered spherical object 150 enters, and the end of the movement path 131 on which the ball 132 is disposed, have. 2, the leading end may be a direction in which the ball 150 and the ball striking part 120 including the trigger unit 121, the driving force providing unit 122 and the elastic member 123 are positioned, May be the direction in which the triggered sphere 150 reaches and strikes the ball 132. That is, one end located at 6 o'clock direction of the movement path 131 is referred to as a distal end, and one end located at 12 o'clock position may refer to the distal end based on the movement path 131 of Fig. Terms set in relation to this direction are used in the same or similar concept throughout this specification. In addition, the movement path 131 is formed in a circular shape so that energy loss of the spherical body 150 due to friction when the spherical member 150 is rotated in the advancing direction can be minimized.

The reason that the distal end and the distal end of the movement path 131 described above are located on the same side is that the distal end and the distal end are not located opposite to each other with respect to the movement path 131, Can be understood to be located next to each other. The wobbling portion 120 and the sphere 150 positioned on the distal end side of the movement path 131 and the sphere 150 positioned on the distal end side of the movement path 131 as the movement path 131 includes the curved path having the predetermined radius of curvature, The ball 132 to be positioned can be located on the same side. Therefore, the length of the path of the straight path can be reduced compared with the path of travel of the straight path, thereby saving space in the airbag 10. Further, as the space in the airbag is saved, it can be easily applied to an inflatable protecting device or a life-saving device such as a wearable airbag or an air vest.

Cartridge 140 may include a compressed gas to inflate airbag 10. The compressed gas may be, for example, nitrogen dioxide gas or nitrogen gas. The gas may be a gas consisting only of carbon dioxide or nitrogen, as well as a gas containing the component or a gas containing the component as a main component.

Referring to FIG. 2, the cartridge 140 may include a cover 141 for discharging compressed gas. The cartridge 140 can break the cover 141 by blowing the ball 132 of the triggered sphere 150 to discharge the compressed gas. The cover 141 can be formed at the inlet of the cartridge 140 and can maintain the sealed state so that the compressed gas does not leak. In addition, the cover 141 may be formed of a material having durability that can be broken by the struck hole 132.

The cover 141 may be opposed to the pointed portion at the distal end of the ball 132. The cover 141 is fixed to the connecting portion 134 of the inflator 130 to be described later and can be opposed to the end of the ball 132. Meanwhile, when the fall signal is generated in the sensor unit 110, the ball 150 may be triggered in the triggering unit 120. FIG. The triggered sphere 150 may strike the back of the ball 132. The cover 141 may be broken by the ball 132 moving in the striking direction of the ball 150 to discharge the compressed gas.

The inflator 130 may include a connecting portion 134 and an inlet 135. The connection portion 134 may be detachably coupled to the cartridge 140 such that the cover 141 is positioned opposite the end of the ball 132. The connection portion 134 may be detachably coupled to the cartridge 140 using various coupling structures such as a screw, a clamp, and a clip. For example, the connection portion 134 may be detachably coupled to the cartridge 140 via a screw connection. The connection portion 134 is engaged with the inlet portion of the cartridge 140 and can be fixed to prevent the cover 141 formed at the inlet from shaking.

3 is a perspective view of an air bag gas injection apparatus according to an embodiment of the present invention. Referring to FIG. 3, the inflator 130 may include an inlet 135 for directing the compressed gas discharged from the cartridge 140 to the airbag 10. The injection port 135 may be connected to the airbag 10 and may be formed between the cover 141 and the ball 132. Illustratively, inflator 130 may include, but is not limited to, two inlets 135.

Referring again to FIG. 2, the inflator 130 may include a support member 133 that supports the ball 132 such that the ball 132 faces the cover 141 in front. Illustratively, the ball support member 133 can be struck back by the triggered sphere 150 to deliver energy of the sphere 150 to the ball 132. The ball 132 may receive the energy from the support member 133 and advance in the striking direction of the sphere 150 to break the cover 141. At this time, the ball 132 can be pushed toward the support member 133 by the pressure of the discharged compressed gas, and the compressed gas is supplied to the air bag 10 (see FIG. 1) through the injection port 135 formed between the cover 141 and the ball 132, ). ≪ / RTI > According to another embodiment, the hole 132 may be formed with a plurality of through holes. When the ball 132 breaks the cover 141 by blowing the ball 150, the compressed gas can be discharged into the hole formed in the ball 132 and injected into the airbag 10 through the injection port 135 .

The airbag gas injection device 100 may include a protective housing 160 that receives the cartridge 140 and the sensor unit 110. The protective housing 160 can receive the cartridge 140 and protect the cartridge 140 from being detached from the connection 134 of the inflator 130 by a fall or other external impact. In addition, the protective housing 160 fixes and supports the sensor unit 110 to prevent an error in detecting the fall due to the shaking of the sensor unit 110.

The sensor unit 110 may be disposed on the distal end side of the movement path 131 and the cartridge 140 may be disposed on the distal end side of the movement path 131. [ 2, the sensor unit 110 may be electrically or physically connected to the detaching unit 120 and may be disposed at the leading end side of the moving path 131, and the cartridge 140 may be connected to the connecting part of the inflator 130 And may be disposed on the distal end side of the movement path 131, The curved path of the movement path 131 may be formed by bending with a predetermined radius of curvature such that the sensor unit 110 and the cartridge 140 are adjacent to each other. The movement path 131 is formed as a curved path having a predetermined radius of curvature so that the wicking portion 120 and the spherical body 150 located on the distal end side of the movement path 131 and the movement path 131 The space in the airbag 10 can be saved more than the movement path of the straight path since the ball 132 located at the distal end side of the airbag 10 can be located on the same side. In addition, since the movement path 131 includes the curved path, the sensor unit 110 and the cartridge 140 can be positioned adjacent to the same side, and can be accommodated in one protective housing 160 to be protected have. In addition, since the sensor unit 110 and the cartridge 140 are located at the same side, it is obvious that the space of the airbag 10 can be saved by reducing the length of the linear path.

Meanwhile, the present invention can provide an air bag including the air bag inflation device according to the above-described one embodiment of the present invention. For example, the airbag can be worn on a body part, such as the hips or waist of the human body, to prevent falls.

It will be understood by those of ordinary skill in the art that the foregoing description of the embodiments is for illustrative purposes and that those skilled in the art can easily modify the invention without departing from the spirit or essential characteristics thereof. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive. For example, each component described as a single entity may be distributed and implemented, and components described as being distributed may also be implemented in a combined form.

The scope of the present invention is defined by the appended claims rather than the detailed description, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included within the scope of the present invention.

10: air bag
100: air bag gas injection device
110:
120:
121: Trigger unit
122: driving force providing unit
123: elastic member
130: Inflator
131: Movement path
132: The ball
133:
134:
135: inlet
140: Cartridge
141: cover
150: Sphere
160: Protective housing

Claims (10)

In a gas injection apparatus for an airbag,
A sensor unit for detecting a fall of a human body from an external impact and generating a fall signal;
A triggering unit for triggering the sphere according to the detection of the sensor unit;
An inflator including a movement path including a curved path having a predetermined radius of curvature such that the triggered spheres are moved and turned, and a ball disposed at an end of the movement path; And
A cartridge including a compressed gas to inflate the airbag,
By the blow of the ball of the triggered ball, the cartridge breaks the cover and discharges the compressed gas,
Wherein the sensor unit is disposed on a leading end side of the movement path,
Wherein the cartridge is disposed at the distal end side of the movement path,
Wherein the curved path is formed by bending the tip of the movement path in which the triggered spheres enter and the distal end of the movement path on which the ball is arranged on the same side and the sensor portion and the cartridge are adjacent to each other ,
Airbag gas injection device. The method according to claim 1,
Wherein the pointed portion at the distal end of the ball is opposed to the cover and the ball is triggered to strike the back of the ball. The method according to claim 1,
The inflator includes:
A connection detachably coupled to the cartridge such that the cover is disposed opposite the end of the ball; And
And an injection port formed between the cover and the ball and connected to the airbag. The method according to claim 1,
The blast unit
A trigger unit for selectively fixing the sphere to prevent entry of the sphere into the movement path;
A driving force providing unit for providing a driving force to the trigger unit; And
And an elastic member that maintains the spherical state in a fixed state so as to provide a triggering force to the spherical body upon releasing the spherical state of the spherical body,
Wherein the ball is released and triggered by driving the trigger unit, delete delete delete The method according to claim 1,
Further comprising a protective housing for receiving the cartridge and the sensor portion. delete An airbag comprising an airbag gas injection device according to claim 1.

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