Inflation hose device

Abstract

Inflation hose device (100) designed to be connected between an inflation device (10) and a twin-wheel tire (20), wherein the twin-wheel tire (20) comprises an outer wheel (22) and an inner wheel (25), the outer wheel (22) comprises an air nozzle (23) facing the inner wheel (25), and the inflation hose device (100) comprises: a flexible hose (110) comprising a first hose end (112) and a second hose end (114) opposite each other; a first connection (120) which is connected to the first hose end (112) and is designed to be screwed onto the inflation device (10); a second connection (130) which is connected to the second hose end (114) and is designed to extend into a space between the outer wheel (22) and the inner wheel (25) and to be screwed to the air nozzle (23); and a cylindrical spring (140) which is pushed onto the flexible hose (110).

Description

BACKGROUND Technical area

[0001] The disclosure relates to an inflation hose device, in particular an inflation hose device suitable for connecting an inflation device and a twin-wheel tire. Description of the state of the art

[0002] The dual-wheel tire consists of an outer wheel, an inner wheel, and a rim positioned between the outer and inner wheels. The outer wheel contains an air nozzle oriented towards both the rim and the inner wheel. Due to the nozzle's orientation, when inflating the dual-wheel tire, the inflation hose must first be guided from the outside of the outer wheel through the hollow section of the rim and then bent back to be pushed onto the air nozzle.

[0003] Because the inflation hose must be folded back 180 degrees within the extremely small space of the hollow section of the wheel rim before it can be connected to the air nozzle, the hose is prone to bulging and deformation at the bend and can even be damaged. Furthermore, the high-frequency vibrations generated during inflation can cause friction between the surface of the inflation hose and the wheel rim, easily leading to wear on the hose surface and potentially posing safety risks to the operator during high-pressure inflation. SUMMARY

[0004] The disclosure relates to a tire inflation hose device that can be stably connected between an inflation device and a twin-wheel tire and is wear-resistant.

[0005] An inflation hose device of the disclosure is designed to be connected between an inflator and a twin-wheel tire. The twin-wheel tire includes an outer wheel and an inner wheel, and the outer wheel includes an air nozzle facing the inner wheel. The inflation hose device includes a flexible hose, a first connector, a second connector, and a cylindrical spring. The flexible hose has a first hose end and a second hose end that are opposite each other. The first connector is connected to the first hose end and is designed to be screwed onto the inflator. The second connector is connected to the second hose end and is designed to extend into a space between the outer wheel and the inner wheel and to be screwed onto the air nozzle. The cylindrical spring is pushed onto the flexible hose.

[0006] In one embodiment of the disclosure, the first connector comprises a connector body, an air core, and a first bundle. The connector body has a first end and a second end that are opposite each other. The air core is screwed into the connector body and is located near the first end. The second end extends into the first hose end. The first bundle is pushed onto the first hose end and presses against it to secure the first connector to the flexible hose.

[0007] In one embodiment of the disclosure, the inner diameter of the cylindrical spring is larger than the outer diameter of the flexible hose, and the inner diameter of the cylindrical spring is less than or equal to the outer diameter of the first bundle.

[0008] In one embodiment of the disclosure, the cylindrical spring contains a first spring end, and the first spring end presses against the first bundle.

[0009] In one embodiment of the disclosure, the first end includes an external thread designed for screwing onto the inflation device.

[0010] In one embodiment of the disclosure, the second connector comprises an inner connector tube, an airtight ring, an outer connector sleeve, and a second bundle. The inner connector tube has a third end and a fourth end that are opposite each other. The airtight ring is pushed onto the fourth end. The outer connector sleeve covers the airtight ring and a portion of the inner connector tube, exposing the third end. The third end extends into the second tube end. The second bundle is pushed onto the second tube end and presses against it to secure the second connector to the flexible tube.

[0011] In one embodiment of the disclosure, the inner diameter of the cylindrical spring is larger than the outer diameter of the flexible hose, and the inner diameter of the cylindrical spring is less than or equal to the outer diameter of the second bundle.

[0012] In one embodiment of the disclosure, the cylindrical spring includes a second spring end, and the second spring end presses against the second bundle.

[0013] In one embodiment of the disclosure, the outer connecting sleeve includes an internal thread near the fourth end, which is designed for screwing onto the air nozzle of the twin-wheel tire.

[0014] A twin-wheel tire inflation module of the disclosure comprises a twin-wheel tire, an inflation device, and the inflation hose device described above. The twin-wheel tire includes an outer wheel and an inner wheel, and the outer wheel includes an air nozzle facing the inner wheel. A first connection is connected to the inflation device, and a second connection extends into the space between the outer and inner wheels and is screwed to the air nozzle of the twin-wheel tire.

[0015] Based on the foregoing, the first connection of the inflation hose device of the disclosure is connected to the first end of the flexible hose and is designed to be screwed onto the inflator. The second connection is connected to the second end of the flexible hose and is designed to be screwed onto the air nozzle. Since both the first and second connections of the inflation hose device can be screwed onto the inflator and the air nozzle, respectively, without the need for manual fastening, more convenient operation is provided and a stable connection between the inflator and the dual-wheel tire is ensured.Furthermore, the second connection of the inflation hose device is designed to extend from the space between the outer and inner wheels into the air nozzle and connect to the nozzle without bending. This simplifies operation and prevents the flexible hose from bending excessively, thus improving its durability. Additionally, the cylindrical spring of the inflation hose device is slid onto the flexible hose. Due to the frame effect of the cylindrical spring, the flexible hose is not excessively bent, and it is isolated from the hollow section of the wheel rim to prevent friction damage, making the inflation hose device wear-resistant. BRIEF DESCRIPTION OF THE DRAWINGS Fig. Figure 1 is a schematic view of a twin-wheel tire inflation module according to an embodiment of the disclosure. Fig. 2 is an enlarged partial view of Fig. 1. Fig. Figure 3 is a schematic view of Fig. 1 from a different perspective. Fig. Figure 4 is a schematic exploded view of Fig. 1. Fig. Figure 5 is a schematic view of the inflation hose device of the twin-wheel tire inflation module. Fig. 1. Fig. Figure 6 is a schematic exploded view of Fig. 5. Fig. Figure 7 is a schematic cross-sectional view of the first connection from Fig. 5. Fig. Figure 8 is a schematic cross-sectional view of the second connection from Fig. 5. DESCRIPTION OF THE EXECUTION FORMS

[0016] Fig. Figure 1 is a schematic view of a twin-wheel tire inflation module according to an embodiment of the disclosure. Fig. 2 is an enlarged partial view of Fig. 1. Fig. Figure 3 is a schematic view of Fig. 1 from a different perspective. Fig. Figure 4 is a schematic exploded view of Fig. 1.

[0017] With reference to the Fig. 1 to Fig. 4 includes a twin-wheel tire inflation module 5 of the embodiment, comprising a twin-wheel tire 20, an inflation device 10, and an inflation hose device 100. The twin-wheel tire 20 includes an outer wheel 22, an inner wheel 25, and a wheel rim 26 located between the outer wheel 22 and the inner wheel 25. The outer wheel 22 includes an air nozzle 23 facing the inner wheel 25 and a hollow section 27 of the wheel rim 26.

[0018] The inflation hose device 100 is connected between the inflation device 10 and the twin-wheel tire 20. In particular, the inflation hose device 100 extends into the space between the outer wheel 22 and the inner wheel 25 and is connected to the air nozzle 23.

[0019] In this embodiment, the connection method between the inflation hose device 100 and the air nozzle 23 makes it possible to connect the inflation hose device 100 to the air nozzle 23 without bending, thus simplifying operation, and the inflation hose device 100 can avoid bending at a large angle and damage from friction with the hollow section 27 of the wheel rim 26, in order to improve the durability of the inflation hose device 100.

[0020] The inflation hose device 100 is described in detail below.

[0021] FIG. 5 is a schematic view of the inflation hose device of the twin-wheel tire inflation module from FIG. 1. FIG. 6 is a schematic exploded view of FIG. 5. FIG. 7 is a schematic cross-sectional view of the first connection from FIG. 5. FIG. 8 is a schematic cross-sectional view of the second connection from FIG. 5. Fig. 5.

[0022] With reference to the Fig. As shown in figures 5 to 8, the inflation hose device 100 of the embodiment comprises a flexible hose 110, a first connection 120, a second connection 130, and a cylindrical spring 140. Fig. As shown in Figure 6, the flexible hose 110 comprises a first hose end 112 and a second hose end 114, which are opposite each other. In this embodiment, the flexible hose 110 can have a relatively long length, so that the inflator 10 does not have to be very close to the twin-wheel tire 20, which increases the ease of inflation.

[0023] The first connection 120 is connected to the first hose end 112 and can be screwed onto the inflation device 10. As in Fig. 6 and Fig. As shown in Figure 7, the first connection 120 in the embodiment in particular includes a connection body 121, an air core 125 and a first bundle 126.

[0024] The connector body 121 comprises a first end 122 and a second end 124, which are opposite each other. In this embodiment, the first end 122 of the first connector 120 has an external thread 123 designed for screwing onto the inflation device 10. The air core 125 is screwed into the connector body 121 and is located near the first end 122. The second end 124 extends into the first hose end 112. The first bundle 126 is pushed onto the first hose end 112 and presses against it to secure the first connector 120 to the flexible hose 110.

[0025] The second connection 130 is connected to the second hose end 114, and the second connection 130 is designed to be screwed onto the air nozzle 23. As in Fig. 6 and Fig. As shown in Figure 8, the second connection 130 in the embodiment includes in particular an inner connection hose 131, an airtight ring 134, an outer connection sleeve 135 and a second bundle 137.

[0026] The inner connecting hose 131 has a third end 132 and a fourth end 133, which are opposite each other, and the airtight ring 134 is pushed onto the fourth end 133. In this embodiment, the outer connecting sleeve 135 has an internal thread 136 near the fourth end 133, which is designed for screwing onto the air nozzle 23 of the twin-wheel tire 20. The outer connecting sleeve 135 covers the airtight ring 134 and a section of the inner connecting hose 131, exposing the third end 132. The third end 132 extends into the second hose end 114. The second bundle 137 is pushed onto the second hose end 114 and presses against it to secure the second connection 130 to the flexible hose 110.

[0027] Since both the first connection 120 and the second connection 130 of the inflation hose device 100 can be connected to the inflator 10 and the air nozzle 23 by screws without the need for manual fastening, more convenient operation is enabled and a stable connection between the inflator 10 and the double wheel tire 20 is ensured.

[0028] Furthermore, in this embodiment, the cylindrical spring 140 is pushed onto the flexible hose 110. Because the cylindrical spring 140 of the inflation hose device 100 is pushed onto the flexible hose 110, the inflation hose device 100 exhibits wear resistance. The cylindrical spring 140 can prevent the flexible hose 110 from being damaged by friction with foreign objects, can prevent excessive bending of the flexible hose 110, which could lead to deformation and indentation of the outer shape of the flexible hose 110, and can also prevent the flexible hose 110 from being squeezed, kicked, or bitten by animals and tearing.

[0029] In this embodiment, the cylindrical spring 140 comprises a first spring end 142 and a second spring end 144. The first spring end 142 presses against the first bundle 126, and the second spring end 144 presses against the second bundle 137.

[0030] As in Fig. 7 and Fig. As shown in Figure 8, the inner diameter of the cylindrical spring 140 is larger than the outer diameter of the flexible hose 110, the inner diameter of the cylindrical spring 140 is less than or equal to the outer diameter of the first bundle 126, and the inner diameter of the cylindrical spring 140 is less than or equal to the outer diameter of the second bundle 137.

[0031] Such a construction can enable the first spring end 142 and the second spring end 144 of the cylindrical spring 140 to press against the first bundle 126 and the second bundle 137 and to be attached to the first port 120 and the second port 130, and the cylindrical spring 140 can slide freely on the outside of the flexible hose 110 in areas outside the first spring end 142 and the second spring end 144.

[0032] It is worth noting that the cylindrical spring 140 offers a significant advantage compared to conventional protective sleeves made of metal mesh, which can cause the inner tube to be pinched when bent. Because the cylindrical spring 140 is deformable and can slide freely on the outside of the flexible tube 110 at points other than the first spring end 142 and the second spring end 144, the cylindrical spring 140 does not compress the flexible tube 110 when bent and ensures even inflation.

[0033] In summary, the first connection of the inflation hose device is connected to the first end of the flexible hose and is designed to screw onto the inflator. The second connection is connected to the second end of the flexible hose and is screwed onto the air nozzle. Since both the first and second connections of the inflation hose device can be screwed onto the inflator and air nozzle without requiring manual fastening, this allows for more efficient and convenient operation and ensures a stable connection between the inflator and the dual-wheel tire.Furthermore, the second connection of the inflation hose device is designed to extend from the space between the outer and inner wheels into the air nozzle and connect to the nozzle without bending. This simplifies operation and prevents the flexible hose from bending excessively, thus improving its durability. Additionally, the cylindrical spring of the inflation hose device is slid onto the flexible hose. Due to the frame effect of the cylindrical spring, the flexible hose is not excessively bent, and it is isolated from the hollow section of the wheel rim to prevent friction damage, making the inflation hose device wear-resistant. DESCRIPTION OF REFERENCE NUMBERS: 5 twin-wheel tire inflation module 10 inflation device 20 dual wheel tires 22 Outer wheel 23 Air nozzle 25 inner wheel 26-inch wheel rim 27 hollow section 100 inflation hose device 110 flexible hose 112 first hose end 114 second hose end 120 first connection 121 Connector bodies 122 first end 123 external threads 124 second end 125 air core 126 first bundle 130 second connection 131 Inner connection hose 132 third end 133 fourth end 134 airtight ring 135 Connection outer sleeve 136 internal threads 137 second bundle 140 cylindrical springs 142 first spring end 144 second spring end QUOTES INCLUDED IN THE DESCRIPTION

[0000] This list of documents cited by the applicant was automatically generated and is included solely for the reader's convenience. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions. Cited non-patent literature

[0000] FIG. 5 is a schematic view of the inflation hose device of the twin-wheel tire inflation module from FIG. 1. FIG. 6 is a schematic exploded view of FIG. 5. FIG. 7 is a schematic cross-sectional view of the first connection from FIG. 5. FIG. 8

[0021]

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