TWI803352B - Gas generator with quick release joint and assembling method thereof - Google Patents

Abstract

A gas generator with a quick release joint and a assembling method thereof are provided. The gas generator includes a gas generator body and a quick release joint. One end of the gas generator body has a gas discharge part and a fixed convex column. The quick release joint includes a socket and a fixing ring. The socket is rotatably disposed at one end of the gas generator body and has an L-shaped groove. The fixing ring is rotatably positioned on the socket. The fixing ring has a groove and a sliding surface, and the groove and the sliding surface of the fixing ring form an L-shaped groove opposite to the groove of the socket. The sliding surface of the fixing ring has a fixing convex point adjacent to a terminal end of the sliding surface. The present invention can achieve the effects of quick disassembly, simple structure and double locking or fixing through the above configuration.

Description

Gas generator with quick release joint and method of assembly thereof

The invention relates to the technical field related to a gas generator for a safety airbag, in particular to a safety airbag suitable for being installed in a personal protective device, which is used to fill the airbag with gas to inflate it, and achieve rapid A gas generator with quick-release joints and an assembly method thereof, which have the effects of disassembly and easy deflation.

The airbag is the standard equipment of the vehicle. When the vehicle collides, the gas generator in the airbag can be inflated instantly in a very short time to form a barrier layer with cushioning and protective functions, thereby protecting the driver and passengers. Safety. However, due to the advantages of extremely fast speed, sufficient gas volume, small size, and good safety, many different industries gradually use automotive gas generators as the power source for their products, such as personal protection, Fire products and more.

Among them, as far as personal protection is concerned, based on the product characteristics of the gas generator, if it is used for personal protection, an adapter is required to connect the gas generator with its pouch to ensure that the gas generator will not be affected by the gas generator during operation. The recoil separates the bladder and allows the system to remain airtight to achieve the expansion of the bladder and keep the bladder inflated until the end of protection. However, most common joints are connected with the gas generator in the form of threads. However, the thread locking requires the generator to be rotated several times, and there is a possibility of loosening without final locking, and the process of replacing the gas generator is time-consuming, and the joint may be damaged due to the thread after repeated use or under the condition of over-tightening As a result, the gas generator cannot be locked normally, and even when the screw teeth are seriously damaged, the gas generator cannot be controlled and the gas generator is separated, which not only fails to protect personnel, but may even cause unexpected injury to personnel.

In view of the foregoing, the inventor of the present invention conceived and designed a gas generator with a quick-release joint and its assembly method in order to improve the deficiencies of the conventional technology, and further enhance the implementation and utilization in the industry.

The object of the present invention is to provide a gas generator with a quick-disconnect joint and an assembly method thereof, so as to improve the aforementioned problems.

Based on the above purpose, the present invention provides a gas generator with a quick-disconnect joint, which includes a gas generator body and a quick-disconnect joint. Wherein, one end of the gas generator body has a combined part; the combined part is a cylinder, and the combined part has a gas discharge part and a fixed post protruding from the gas generator body in the radial direction. Wherein, the quick release joint includes a socket and a fixing ring. The socket is rotatably located at the combined part; the socket has a first groove and a swivel groove; the first groove is arranged along the axial direction of the socket; the second One end of a groove is connected to one end of the sleeve set on the combined part; the other end of the first groove is connected to one end of the rotation groove; the rotation groove is arranged along a first rotation direction, and the rotation The other end of the groove is the terminal end; the fixed ring is rotatably located on the sleeve; the fixed ring has a second groove and a rotating sliding surface; one end of the second groove is connected to the fixed ring sleeve at one end of the sleeve; the other end of the second groove is connected to one end of the rotating sliding surface; the rotating sliding surface is arranged in a second rotating direction opposite to the first rotating direction, and the rotating The other end of the sliding surface is a terminal end; the rotating sliding surface is adjacent to the other end of the rotating sliding surface and is provided with a fixed convex part protruding.

Preferably, when the quick release joint and the gas generator body are assembled, the fixing boss is located between the end of the swivel groove and the end of the swivel sliding surface, and is located between the end of the swivel slide Between the terminal end of the surface and the fixed protrusion.

Preferably, the fixing protrusion is arc-shaped, and the fixing protrusion has a maximum protrusion height, and there is a retreat distance between the side of the swirling groove opposite to the swirling sliding surface and the fixing protrusion, The retreat distance is greater than the maximum protrusion height of the fixing protrusion.

Preferably, the combined part has a neck that is tapered from a circular diameter, and a first elastic ring is provided on the neck; one end of the socket has an insertion hole for the combined part to extend into; The insertion hole is provided with a stopper at a position corresponding to the first elastic ring, and the gap between the stopper and the neck is smaller than the thickness or the diameter of the first elastic ring.

Preferably, the position of the stopper relative to the neck is provided with a slope.

Preferably, the other end of the sleeve has a gas flow opening; the diameter of the gas flow opening is larger than the diameter of the combination part.

Preferably, a buffer groove is provided at a position corresponding to the gas discharge part in the gas flow port, and the buffer groove is inwardly recessed from the inner surface of the gas flow port.

Preferably, a flow guiding part is provided at the junction of the buffer groove and the inner surface of the gas flow port.

Preferably, a plurality of second elastic rings are arranged at intervals adjacent to the outer circumference of the other end of the socket.

Based on the above purpose, the present invention further provides a method for assembling a gas generator with a quick-release joint, which is applied to the above-mentioned gas generator with a quick-release joint, which includes the following steps: Align the first groove and the second groove, and then set the quick release joint on the combination part; fix the rotational degree of freedom of the quick release joint and rotate the gas generator body along the first rotation direction , so that the fixed boss reaches the end of the swivel groove; fix the rotational freedom of the gas generator body and the sleeve and rotate the fixed ring along the first rotation direction, so that the fixed boss reaching the position of the fixing protrusion; fixing the rotational degree of freedom of the fixing ring and rotating the gas generator body in the second rotational direction such that the fixing post passes over the fixing protrusion; and rotating the gas generator body so that the fixing boss reaches the end of the swivel groove.

The gas generator with quick release joint and its assembly method of the present invention can achieve the following improvement effects: 1. The gas generator with quick-release joints of the present invention can be replaced quickly by configuring the predetermined grooves of the sleeve and the fixing ring, and matching the configuration of the fixing bosses of the gas generator body. And after use, it can also be used to achieve the effect of quickly deflated. 2. The gas generator with quick-release joints of the present invention can achieve the effects of simple structure, small size and light weight through the configuration of the predetermined structure of the sleeve and the fixing ring. 3. The gas generator with quick-release joints of the present invention has double locking or fixing protection against detachment through the configuration of the predetermined structure of the sleeve and the fixing ring, and is not easy to be damaged.

Based on the above effects, the gas generator with quick release joints and its assembly method of the present invention can properly or effectively replace the old joints and achieve higher safety.

The technical features of the present invention will be described in detail below with specific embodiments and accompanying drawings, so that those skilled in the art can easily understand the purpose, technical features, and advantages of the present invention.

The advantages, features, and technical methods achieved by the present invention will be described in more detail with reference to exemplary embodiments and accompanying drawings to make it easier to understand, and the present invention can be implemented in different forms, so it should not be understood as being limited to what is shown here The stated embodiments, on the contrary, for those of ordinary skill in the art, the provided embodiments will make the present disclosure more thorough and complete and fully convey the scope of the present invention, and the present invention will only be appended Defined by the patent scope of the application.

It should be understood that although the terms "first", "second" and the like may be used in the present invention to describe various elements, components, regions, sections, layers and/or sections, these elements, components, regions, sections , layer and/or section should not be limited by these terms. These terms are only used to distinguish one element, component, region, section, layer and/or section from another element, component, region, section, layer and/or section.

Unless otherwise defined, all terms (including technical and scientific terms) used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms such as those defined in commonly used dictionaries should be interpreted as having definitions consistent with their meanings in the context of the relevant art and the present invention, and will not be construed as idealistic or overly formal unless otherwise expressly defined herein.

Please refer to Figure 1 and Figure 2 together. Fig. 1 is an explosion schematic diagram of the gas generator with quick-disconnect joints of the present invention. Fig. 2 is a schematic cross-sectional view of the gas generator with quick-disconnect joints of the present invention. The gas generator 1 with quick release joints of the present invention can be applied to such as personal protection, fire protection products, household equipment, etc., preferably, the gas generator 1 with quick release joints of the present invention is mainly used in Personal protective equipment such as helmets and protective clothing. As shown in the figure, a gas generator 1 with a quick release joint according to the present invention mainly includes a gas generator body 11 and a quick release joint 12 .

Among them, the bottle body material, internal structure and the content contained in the gas generator body 11 can be the technical means that are well known or commonly used by those with ordinary knowledge in the technical field of the present invention, and this part will not be repeated here. To repeat. One end of the gas generator body 11 has a combination portion 111 . Wherein, the combination part 111 is preferably cylindrical, and the combination part 111 has a gas discharge part 112 and a fixed protrusion 113 protruding from the surface of the gas generator body 11 in the radial direction, preferably , the fixing boss 113 can be a cylinder, an ellipse, etc., or the fixing boss 113 can have rounded corners, bevels, etc. The column of the structure.

Wherein, the quick release joint 12 includes a socket 121 and a fixing ring 122 . The sleeve 121 can be made of common iron and steel, and it is also made of aluminum alloy to reduce the overall weight. The sleeve 121 is rotatably located or disposed on the combining portion 111 . The fixing ring 122 is made of general iron and steel to ensure wear resistance and better rigidity. The fixing ring 122 is rotatably located on the sleeve 121 .

Furthermore, the sleeve 121 can be substantially cylindrical or tubular in shape, so as to have an insertion hole 1214 , so that the sleeve 121 can be located or disposed on the assembly portion 111 by utilizing the insertion hole 1214 . Wherein, the socket member 121 has a first groove 1211 and a swivel groove 1212 . The first groove 1211 is arranged along the axial direction of the socket 121; one end of the first groove 1211 is connected to one end of the socket 121 sleeved on the assembly part 111, and the first groove 1211 The other end is connected to one end of the swivel groove 1212 ; that is, the first groove 1211 is extended from the end of the sleeve 121 inserted or inserted into the assembly part 111 and is connected to the swivel groove 1212 . The other end of the swivel groove 1212 is a terminal end. That is, the first groove 1211 and the swivel groove 1212 can form a limiting structure in an L-shape (or "" shape). In this way, when the socket 121 can be located or arranged on the combination part 111 by using the inserting hole 1214, the fixing protrusion 113 can enter the limiting structure of the socket 121 through the first groove 1211 (that is, the second a groove 1211 and a swivel groove 1212).

Incidentally, a plurality of second elastic rings 14 are disposed at intervals on the outer circumference of the socket 121 adjacent to the other end of the socket 121 . Thereby, good airtightness is provided between the gas generator 1 with the quick release joint of the present invention and the assembled or installed air bag.

In addition, the fixing ring 122 has a second groove 1221 and a rotating sliding surface 1222 correspondingly. Wherein, one end of the second groove 1221 is connected to the fixed ring 122 and sleeved on one end of the sleeve 121, and the other end of the second groove 1221 is connected to one end of the rotating sliding surface 1222, and the rotating The other end of the sliding surface 1222 is a terminal end. That is to say, the second groove 1221 and the rotating sliding surface 1222 can form a limiting structure in an L-shape (or "￢" shape). In this way, when the fixing ring 122 is located or disposed on the combination of the socket member 121 and the combination part 111 , the fixing protrusion 113 can enter the limiting structure of the fixing ring 122 through the second groove 1221 .

It should be noted that the swirling groove 1212 is arranged along a first rotating direction R1, and the rotating sliding surface 1222 is arranged along a second rotating direction R2 opposite to the first rotating direction R1. Moreover, a fixed protrusion 1223 protruding from the other end of the rotating sliding surface 1222 adjacent to the rotating sliding surface 1222 is disposed. That is to say, when the quick release joint 12 is assembled with the gas generator body 11, the fixing boss 113 is located between the end of the rotating groove 1212 and the end of the rotating sliding surface 1222, and It is located between the terminal end of the rotating sliding surface 1222 and the fixing protrusion 1223 . In this way, when the gas generator body 11 or the quick release joint 12 is rotated so that the fixed protrusion 113 passes over the fixed protrusion 1223, the fixed protrusion 1223 can limit the degree of freedom of the reverse displacement of the fixed protrusion 113, so that the fast The dismantling joint 12 can be firmly arranged on the gas generator body 11 .

On the other hand, the combination part 111 has a neck 114 tapered by a circular diameter, and a first elastic ring 13 is provided on the neck 114. Preferably, the first elastic ring 13 can be made of EPDM material. , in order to achieve good temperature shock resistance characteristics. Wherein, the inserting hole 1214 is provided with a stopper 12141 corresponding to the position of the first elastic ring 13, and the gap between the stopper 12141 and the neck 114 is smaller than the thickness or circle of the first elastic ring 13. path. Incidentally, the stop portion 12141 is provided with an inclined portion 12142 relative to the neck portion 114 , that is, the inclined portion 12142 is disposed at a position where the stop portion 12141 faces the first elastic ring 13 . Due to the configuration of the predetermined structure of the stopper 12141 and the first elastic ring 13, when the quick release joint 12 and the gas generator body 11 are assembled, the stopper 12141 and its slope 12142 and the neck 114 can be Press the first elastic ring 13 to deform it, so as to fill or block the gap between the stopper part 12141 and the neck 114, so that the gas generator 1 with the quick release joint of the present invention can be connected with the There is good airtightness between the assembled or set air bag bags.

Please refer to Figure 8 together. It is worth mentioning that the fixing protrusion 1223 is arc-shaped or has rounded corners, arcs, slopes and other structures at both ends. Wherein, the fixing protrusion 1223 has a maximum protrusion height H, which can be, for example, 0.4 mm to 0.8 mm, and its actual value can be adjusted according to actual application, so it should not be taken as a limitation. Wherein, the side of the rotating groove 1212 opposite to the rotating sliding surface 1222 has a retreat distance 1213 from the fixing protrusion 1223 , and the retreat distance 1213 is greater than the maximum protrusion height H of the fixing protrusion 1223 . And because the first elastic ring 13 has proper elastic restoring force, thereby during the period when the fixing boss 113 crosses over the fixing protrusion 1223, the first elastic ring 13 can also provide such as to make the fixing boss 113 rest on the gas generator body 11. Ability to reset during axial displacement. Moreover, when the stopper portion 12141 and its sloped portion 12142 and the neck 114 can press the first elastic ring 13 to deform the first elastic ring 13, the elastic restoring force of the first elastic ring 13 can simultaneously provide the fixing protrusion 113 is positioned on the fixed boss 113 is located between the end of the rotating groove 1212 and the end of the rotating sliding surface 1222, and between the end of the rotating sliding surface 1222 and the fixing protrusion 1223 Effect.

Incidentally, the inclined portion 12142 also facilitates smooth movement of the socket 121 during assembly, so that the user can easily assemble the socket 121 to the combination portion 111 .

Furthermore, the other end of the sleeve 121 (ie, the end opposite to the insertion end of the combination part 111 ) has a gas flow opening 1215 , and the diameter of the gas flow opening 1215 is larger than the diameter of the combination part 111 . Wherein, an annular buffer groove 12151 is provided in the gas circulation port 1215 corresponding to the position of the gas discharge part 112, and the buffer groove 12151 is inwardly recessed from the inner surface of the gas circulation port 1215; That is to say, the gas circulation port 1215 and the buffer groove 12151 can generally or their cross-sections form a convex-shaped structure. Preferably, a flow guiding portion 12152 is provided at the junction of the buffer groove 12151 and the inner surface of the gas circulation port 1215 .

In this way, the buffer groove 12151 can effectively slow down the impact force when the gas generator discharges the gas, and avoid the occurrence of situations such as rupture of the air bag due to excessive impact force when the gas is discharged. It is worth mentioning that in practice, it can be used to adjust the relationship that the diameter of the gas flow port 1215 is larger than the diameter of the combination part 111, that is, to adjust the socket 121 behind the buffer groove 12151 when the gas flows out. The size of the gap with the combination part 111 can adjust the flow velocity and flow rate when the gas flows out.

Please refer to Figures 1 and 2 together with Figures 3 to 8. FIGS. 3 to 8 are sequence diagrams or assembly diagrams when assembling the quick release joint 12 on the gas generator body 11 . The relevant steps of the method for assembling the gas generator with quick release joints will be described below.

As shown in FIG. 3, insert the combination part 111 of the gas generator body 11 into the quick release joint 12, that is, rotate the fixing ring 122 to align or overlap the first groove 1211 and the second groove 1221, Then align the fixing post 113 with the first groove 1211 and the second groove 1221 , and then insert the combination part 111 into the sleeve hole 1214 . At this time, the fixing post 113 will enter into the first groove 1211 and the second groove 1221 together. Next, as shown in Figures 3 and 4, the user can first fix the rotational degree of freedom of the quick release joint 12 and rotate the gas generator body 11 along the first rotational direction R1 (or the user can make the sleeve The connecting piece 121 and the gas generator body 11 are relatively rotated), so that the fixing boss 113 reaches the terminal end of the rotating groove 1212 .

As shown in Figures 5 and 6, the degree of freedom of rotation of the gas generator body 11 and the sleeve 121 is fixed and the fixing ring 122 is rotated along the first rotation direction R1 (or the user can make the gas generator The combination of the main body 11 and the sleeve 121 is rotated relative to the fixing ring 122 ), so that the fixing protrusion 113 reaches the position of the fixing protrusion 1223 . Then, as shown in FIG. 7 , the degree of freedom of rotation of the fixing ring 122 is fixed and the gas generator body 11 is rotated along the second rotation direction R2 so that the fixing boss 113 passes over the fixing protrusion 1223 . As shown in FIG. 8 , finally, the gas generator body 11 is rotated so that the fixing boss 113 reaches the end of the rotating groove 1212 . At this time, the fixing protrusion 113 is located between the end of the rotating groove 1212 and the end of the rotating sliding surface 1222 , and between the ending end of the rotating sliding surface 1222 and the fixing protrusion 1223 .

In this way, the quick release joint 12 and the gas generator body 11 can be double-locked or fixed to prevent disengagement through the arrangement of the predetermined structure of the sleeve 121 and the fixing ring 122, and it is not easy to be damaged. It is worth mentioning that, as can be seen from the above, the gas generator 1 with quick release joints of the present invention can provide the effect of quick assembly, and of course, it can also provide the effect of quick disassembly. Therefore, when the gas generator 1 with quick release joints of the present invention is in operation and the gas is filled into the airbag bag to protect the user, relevant personnel can quickly disassemble the gas generator body 11, so that the gas in the airbag bag It can be quickly excreted to facilitate the subsequent inspection of the user or first aid procedures.

The above descriptions are illustrative only, not restrictive. Any equivalent modification or change made without departing from the spirit and scope of the present invention shall be included in the scope of the appended patent application.

1: Gas generator with quick release connector 11: Gas generator body 111: combination department 112: Gas discharge part 113: fixed boss 114: Neck 12:Quick release connector 121: socket 1211: the first groove 1212: Swivel groove 1213: Backoff distance 1214: set into the hole 12141: stopper 12142: Inclined part 1215: gas flow port 12151: buffer groove 12152: Diverter 122: fixed ring 1221: Second groove 1222: rotating sliding surface 1223: fixed convex part 13: The first elastic ring 14: Second elastic ring H: maximum protrusion height R1: the first direction of rotation R2: Second direction of rotation

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments of the present invention. Obviously, the accompanying drawings described below are only some embodiments of the present invention. Those skilled in the art to which the present invention pertains can also obtain other drawings based on these drawings. Fig. 1 is an explosion schematic diagram of the gas generator with quick-disconnect joints of the present invention. Fig. 2 is a schematic cross-sectional view of the gas generator with quick-disconnect joints of the present invention. Fig. 3 is a schematic diagram of the first assembly of the gas generator with quick release joints of the present invention. Fig. 4 is a second assembly diagram of the gas generator with quick-disconnect joints of the present invention. Fig. 5 is a schematic diagram of the third assembly of the gas generator with quick release joints of the present invention. FIG. 6 is a fourth assembly diagram of the gas generator with quick-disconnect joints of the present invention. FIG. 7 is a fifth assembly diagram of the gas generator with quick-disconnect joints of the present invention. Fig. 8 is a schematic diagram of the completed assembly of the gas generator with quick release joints of the present invention.

1: Gas generator with quick release connector

11: Gas generator body

111: combination department

112: Gas discharge part

113: fixed boss

114: Neck

12:Quick release connector

121: socket

1211: the first groove

1212: Swivel groove

1214: set into the hole

1215: gas flow port

122: fixed ring

1221: Second groove

1222: rotating sliding surface

1223: fixed convex part

13: The first elastic ring

14: Second elastic ring

Claims (10)

A gas generator with a quick disconnect coupling, comprising: A gas generator body, one end of which has a combination part, the combination part is cylindrical, and the combination part has a gas discharge part and a fixed boss protruding from the gas generator body in the radial direction; and A quick release joint includes a sleeve and a fixed ring, the sleeve is rotatably located at the combination part, the sleeve has a first groove and a rotation groove, the first The groove is arranged along the axial direction of the socket, one end of the first groove is connected to one end of the socket sleeved on the combination part, and the other end of the first groove is connected to one end of the swivel groove , the swivel groove is set along a first rotation direction, and the other end of the swirl groove is a terminal end, the fixed ring is rotatably located on the sleeve, the fixed ring has a second groove and a swivel One end of the second groove is connected to the fixed ring and is sleeved on one end of the sleeve, the other end of the second groove is connected to one end of the rotating sliding surface, and the rotating sliding surface is along the A second rotation direction opposite to the first rotation direction is set, and the other end of the swirling sliding surface is a terminal end, and the swirling sliding surface is provided with a protrusion disposed adjacent to the other end of the swirling sliding surface a fixed protrusion. The gas generator with a quick release joint as described in Claim 1, wherein when the quick release joint and the gas generator body are assembled, the fixing boss is located at the end of the swivel groove and the swivel slide between the terminal ends of the sliding surfaces, and between the terminal ends of the rotating sliding surface and the fixed protrusion. The gas generator with a quick-release joint as described in claim 1, wherein the fixed protrusion is arc-shaped, and the fixed protrusion has a maximum height, and the swirl groove is opposite to the swirl sliding surface. There is a retreat distance between the side and the fixing protrusion, and the retreat distance is greater than the maximum protrusion height of the fixing protrusion. The gas generator with quick-disconnect joints as described in claim 1, wherein the combined part has a neck that is tapered from a circular diameter, and a first elastic ring is provided on the neck, and one end of the socket is There is a set-in hole for the assembly part to extend into. The set-in hole is provided with a stop part corresponding to the position of the first elastic ring, and the gap between the stop part and the neck is smaller than that of the first elastic ring. The thickness or diameter of the ring. The gas generator with a quick-disconnect joint as claimed in claim 4, wherein the position of the stopper relative to the neck is provided with a slope. The gas generator with a quick-disconnect joint as described in claim 4 or 5, wherein the other end of the sleeve has a gas flow port, and the diameter of the gas flow port is larger than the diameter of the combination part. The gas generator with quick-release joints as described in claim 6, wherein a buffer groove is provided in the gas flow port corresponding to the gas discharge part, and the buffer groove is from the inner surface of the gas flow port to the inside recessed. The gas generator with a quick-disconnect joint as claimed in claim 7, wherein a flow guiding part is provided at the junction of the buffer groove and the inner surface of the gas flow port. The gas generator with a quick-disconnect joint as claimed in claim 1, wherein a plurality of second elastic rings are arranged at intervals on the outer circumference of the socket adjacent to the other end of the socket. An assembly method of a gas generator with a quick release joint, which is applied to the gas generator with a quick release joint as described in any one of claims 1 to 9, the assembly of the gas generator with a quick release joint The method includes the following steps: aligning the fixing boss with the first groove and the second groove, and then disposing the quick release joint on the combination part; Fixing the rotational degree of freedom of the quick release joint and rotating the gas generator body along the first rotational direction, so that the fixed post reaches the terminal end of the rotational groove; fixing the degree of freedom of rotation of the gas generator body and the sleeve and rotating the fixing ring along the first rotation direction so that the fixing boss reaches the position of the fixing protrusion; fixing the rotational degree of freedom of the fixing ring and rotating the gas generator body in the second rotational direction such that the fixing boss passes over the fixing protrusion; and Rotate the gas generator body so that the fixing boss reaches the end of the swivel groove.

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