Automobile rubber pipe assembly with anti-fracture structure

Abstract

The invention discloses an automobile rubber pipe assembly with an anti-fracture structure, and relates to the technical field of automobile rubber pipes, the automobile rubber pipe assembly comprises a first connecting pipe and a second connecting pipe, one end of the first connecting pipe is fixedly connected with a fixing flange, one side of the fixing flange is provided with a threaded groove, and a sealing ring is installed in the threaded groove; grooves are formed in the outer portion of the first connecting pipe and the outer portion of the second connecting pipe, and rubber hoses are arranged on the outer portion of the first connecting pipe and the outer portion of the second connecting pipe in a sleeving mode. According to the rubber hose, due to the innovative multi-layer composite structural design, the fracture resistance is remarkably improved while the flexibility of the rubber hose is kept, the hydrogenated nitrile rubber inner rubber layer provides excellent oil resistance and high temperature resistance, the rubber hose can work at the temperature of-45 DEG C to 160 DEG C, and the service life of the rubber hose is prolonged. The spirally-wound aramid fiber reinforcing belt and the gradient transition layer achieve the synergistic effect to achieve stress optimization distribution, and the special stainless steel supporting strip and the carbon fiber reinforcing piece of the bending section are combined to enable the local bending strength to be improved by 300%.

Description

Technical Field

[0001] The invention relates to the technical field of automobile rubber tubes, in particular to an automobile rubber tube assembly with an anti-fracture structure. Background Art

[0002] As a core component of the automotive piping system, the technological development of automotive rubber hoses is closely related to the innovation of automotive power systems and the improvement of safety performance. In fuel vehicles, rubber hoses undertake key functions such as fuel transmission (oil-resistant NBR / FKM materials), coolant circulation (heat-resistant EPDM) and turbocharging (high-pressure steel wire reinforced structure), which are directly related to engine efficiency and emission control.

[0003] The rubber molecular chains of existing rubber hoses are broken under long-term high-temperature environment, resulting in brittle material. Stress concentration occurs at the bending parts of the pipes due to repeated deformation. The periodic stress caused by engine vibration leads to material fatigue. In addition, the hoses are inconvenient to install and are prone to falling off due to the vibration of the car after long-term use.

[0004] Based on this, an automobile rubber hose assembly with an anti-fracture structure is now provided to eliminate the disadvantages of the existing device. Summary of the Invention

[0005] The object of the present invention is to provide an automobile rubber tube assembly with an anti-fracture structure to solve the problems in the background art of being easily broken after long-term use and being easily fallen off due to the vibration of the automobile.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] An automotive rubber tube assembly with an anti-fracture structure includes a first connecting tube and a second connecting tube. One end of the first connecting tube is fixedly connected to a fixing flange. A threaded groove is provided on one side of the fixing flange. A sealing ring is installed inside the threaded groove.

[0008] Grooves are provided on the outside of the first connecting tube and the second connecting tube, and rubber hoses are sleeved on the outside of the first connecting tube and the second connecting tube. Metal tie is sleeved on the outside of the rubber hose and located at the groove, and a positioning component is equidistantly provided in a ring on the other side of the threaded groove.

[0009] In an optional solution, the rubber hose includes an inner rubber layer, a reinforcement tape is spirally wound around the outer portion of the inner rubber layer, a transition layer is filled on the outer portion of the reinforcement tape, and an outer rubber layer is adhered to the outer portion of the transition layer.

[0010] In an optional solution, the reinforcement belt is made of aramid fiber, and the transition layer is made of silicone rubber.

[0011] In an optional solution: the outer rubber layer includes a base layer, the base layer is attached to the outside of the transition layer, a stainless steel support bar is embedded in the outer side of the base layer, and a reinforcing sheet is attached to the outer side of the base layer.

[0012] In an optional solution, the reinforcing sheet is made of carbon fiber, and the base layer is made of EPDM rubber.

[0013] In an optional solution: the positioning assembly includes a fixed sleeve, which is fixedly installed on the other side of the fixed flange, and two first clamps are rotatably installed inside the fixed sleeve. The outsides of the two first clamps are fixedly connected to semicircular gears, and the two semicircular gears are meshed with each other. A reset assembly is provided on one side of the two first clamps, and a drive assembly is provided on the outside of one of the first clamps.

[0014] In an optional solution, the reset assembly includes two positioning posts, which are fixedly connected to opposite sides of the two first clamps respectively. A spring is sleeved on the outside of the two positioning posts, and one end of the spring is fixedly connected to the fixing sleeve.

[0015] In an optional solution: the driving assembly includes a first gear, the first gear is fixedly mounted on the outside of one of the first clamps, the outside of the first gear is meshedly connected to the second gear, and the second gear is rotatably mounted between the fixed sleeve, one end of the second gear passes through the fixed sleeve and is connected to the first pulley, one side of the first pulley is fixedly connected to the second pulley, one side of the second pulley is fixedly connected to a knob, and a transmission belt is provided between the first pulley and the second pulley.

[0016] In an optional solution: one end of the second connecting pipe is fixedly connected to a threaded barrel, and the threaded barrel is adapted to the threaded groove.

[0017] In an optional solution, a rotating flange is rotatably mounted on the outside of the second connecting pipe, a second clamping member is equidistantly annularly fixedly connected to one side of the rotating flange, and the second clamping member is adapted to the first clamping member.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The rubber hose of the present invention adopts an innovative multi-layer composite structure design, which significantly improves the fracture resistance while maintaining the flexibility of the rubber hose. The hydrogenated nitrile rubber inner layer provides excellent oil and high temperature resistance and can operate at -45°C to 160°C. The spirally wound aramid fiber reinforcement belt and the gradient transition layer work together to achieve optimized stress distribution. The combination of stainless steel support bars and carbon fiber reinforcement sheets in the bending section increases the local bending strength by 300%.

[0020] 2. The present invention facilitates the connection of the rubber tube by setting the positioning component, and the connection is firm and not prone to loosening. There is no need to use bolts for fixing. When the rubber tube reaches its service life or is damaged, it can be easily disassembled and replaced, thereby improving practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0022] Figure 2 It is a schematic cross-sectional structural diagram of the rubber hose of the present invention.

[0023] Figure 3 It is a schematic diagram of the cross-sectional structure of the outer rubber layer of the present invention.

[0024] Figure 4 This is a schematic diagram of the sealing ring installation structure of the present invention.

[0025] Figure 5 This is a schematic structural diagram of the groove of the present invention.

[0026] Figure 6 It is a schematic structural diagram of the positioning mechanism of the present invention.

[0027] Figure 7 This is a schematic diagram of the semicircular gear installation structure of the present invention.

[0028] Figure 8 It is a schematic diagram of the transmission belt installation structure of the present invention.

[0029] Notes on the accompanying drawings: 1. First connecting pipe; 2. Fixed flange; 3. Threaded groove; 4. Sealing ring; 5. Threaded barrel; 6. Second connecting pipe; 7. Rotating flange; 8. Positioning assembly; 81. Fixed sleeve; 82. First clamp; 83. First gear; 84. Second gear; 85. First pulley; 86. Second pulley; 87. Knob; 88. Positioning column; 89. Spring; 810. Transmission belt; 811. Semicircular gear; 9. Rubber hose; 91. Inner rubber layer; 92. Reinforcement belt; 93. Transition layer; 94. Outer rubber layer; 941. Base layer; 942. Stainless steel support bar; 943. Reinforcement sheet; 10. Groove; 11. Metal cable tie; 12. Second clamp. DETAILED DESCRIPTION

[0030] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments.

[0031] In one embodiment, Figures 1-8As shown, an automobile rubber tube assembly with an anti-fracture structure includes a first connecting tube 1 and a second connecting tube 6. One end of the first connecting tube 1 is fixedly connected to a fixing flange 2. A threaded groove 3 is opened on one side of the fixing flange 2. A sealing ring 4 is installed inside the threaded groove 3.

[0032] A groove 10 is provided on the outside of the first connecting tube 1 and the second connecting tube 6. A rubber hose 9 is sleeved on the outside of the first connecting tube 1 and the second connecting tube 6. A metal cable tie 11 is sleeved on the outside of the rubber hose 9 and located at the groove 10. A positioning assembly 8 is equidistantly provided in an annular shape on the other side of the threaded groove 3.

[0033] In this embodiment, the positioning component 8 is provided to facilitate the connection of the rubber tube, and the connection is firm and not prone to loosening. There is no need to use bolts for fixing. When the rubber tube reaches its service life or is damaged, it can be easily disassembled and replaced, which improves practicality. The rubber hose 9 uses an innovative multi-layer composite structure design to significantly improve the fracture resistance while maintaining the flexibility of the rubber tube. The hydrogenated nitrile rubber inner layer 91 provides excellent oil and high temperature resistance and can operate at -45°C to 160°C. The spirally wound aramid fiber reinforced belt 92 and the gradient transition layer 93 work together to achieve optimized stress distribution. The combination of the stainless steel support bar 942 and the carbon fiber reinforcement sheet 943 in the bending section increases the local bending strength by 300%. Combined with the surface microstructure design and plasma treatment process, the product has a fatigue life of 2-3 times that of the traditional structure with only a 15% increase in weight, and the installation bending radius can be reduced to 3 times the pipe diameter, which comprehensively solves the fracture failure problem of automotive rubber tubes under high temperature, vibration and bending conditions.

[0034] The rubber hose 9 includes an inner rubber layer 91, the outer side of the inner rubber layer 91 is spirally wound with a reinforcement belt 92, the outer side of the reinforcement belt 92 is filled with a transition layer 93, the outer side of the transition layer 93 is adhered with an outer rubber layer 94, the reinforcement belt 92 is made of aramid fiber, the transition layer 93 is made of silicone rubber, the inner rubber layer 91 is made of oil-resistant and heat-resistant hydrogenated nitrile rubber, with a thickness of 1.5-2.5mm, the reinforcement belt 92 is spirally wound on the outer surface of the inner rubber layer 91, the winding angle is 55-65°, the bandwidth is 8-12mm, the belt spacing is 3-5mm, the transition layer 93 is filled in the gap of the reinforcement belt 92, the Shore hardness is 40-50A, the nitrile rubber inner rubber layer 91 provides excellent oil and high temperature resistance, and can work at -45℃~160℃, the spirally wound aramid fiber reinforcement belt 92 and the gradient transition layer 93 work together to achieve stress optimization distribution.

[0035] The outer rubber layer 94 includes a base layer 941, which is attached to the outside of the transition layer 93. A stainless steel support bar 942 is embedded in the outer side of the curved side of the base layer 941. A reinforcing sheet 943 is attached to the outside of the curved side of the base layer 941. The reinforcing sheet 943 is made of carbon fiber, and the base layer 941 is made of EPDM rubber. The base layer 941 is coated on the outside of the transition layer 93. The surface of the stainless steel support bar 942 is provided with an array of micro-pits with a depth of 50-80 μm. The surface pits improve the bonding strength with the rubber through the mechanical interlocking effect. The fiber direction of the reinforcing sheet 943 is at an angle of 45±5° to the axis of the pipe. The 45° arrangement can simultaneously resist bending stress and torsional stress.

[0036] The positioning assembly 8 includes a fixing sleeve 81, which is fixedly mounted on the other side of the fixing flange 2. Two first clamps 82 are rotatably mounted inside the fixing sleeve 81. The exteriors of the two first clamps 82 are fixedly connected to semicircular gears 811, which mesh with each other. A reset assembly is provided on one side of each of the two first clamps 82, and a driving assembly is provided on the exterior of one of the first clamps 82. The reset assembly includes two positioning posts 88, which are fixedly connected to opposite sides of the two first clamps 82. The two positioning posts 88 are fixedly mounted on opposite sides of the two first clamps 82. The outside of the position column 88 is provided with a spring 89, one end of the spring 89 is fixedly connected to the fixed sleeve 81, and the driving assembly includes a first gear 83, the first gear 83 is fixedly mounted on the outside of one of the first clamps 82, the outside of the first gear 83 is meshed with a second gear 84, and the second gear 84 is rotatably mounted between the fixed sleeve 81, one end of the second gear 84 passes through the fixed sleeve 81 and is connected to a first pulley 85, one side of the first pulley 85 is fixedly connected to a second pulley 86, one side of the second pulley 86 is fixedly connected to a knob 87, the first pulley 85 and the second pulley 86 are provided with a transmission belt 810. When the second connecting pipe 6 needs to be connected to the first connecting pipe 1, the threaded barrel 5 is inserted into the inside of the thread groove 3, and the second clamp 12 is aligned with the positioning assembly 8. The second connecting pipe 6 is rotated so that the rotating flange 7 is close to the fixed flange 2, and the second clamp 12 moves toward the inside of the positioning assembly 8. Since the first clamp 82 and the second clamp 12 are provided with chamfers, the second clamp 12 causes the two first clamps 82 to rotate, and the spring 89 is compressed. When the second clamp 12 completely enters the interior of the fixed sleeve 81, due to the reset effect of the spring 89, the second clamp 12 is 12 is limited by two first clamps 82. This structure effectively avoids the separation of the second connecting tube 6 and the first connecting tube 1 during long-term use, thereby improving stability. When the second connecting tube 6 and the first connecting tube 1 need to be disassembled, turn the knob 87, and the knob 87 drives the second pulley 86 and the first pulley 85 to rotate together. Due to the cooperation of the transmission belt 810, multiple first clamps 82 rotate. Due to the setting of the semicircular gear 811, all the first clamps 82 are opened, and the limit of the second clamp 82 on the second clamp 12 is released. At this time, the second connecting tube 6 can be disassembled from the first connecting tube 1 by rotating the second connecting tube 6.

[0037] One end of the second connecting tube 6 is fixedly connected to a threaded barrel 5, and the threaded barrel 5 is adapted to the threaded groove 3. A rotating flange 7 is rotatably installed on the outside of the second connecting tube 6. A second clamp 12 is equidistantly annularly fixedly connected to one side of the rotating flange 7, and the second clamp 12 is adapted to the first clamp 82. The sealing ring 4 ensures the sealing of the connection between the first connecting tube 1 and the second connecting tube 6. When the first connecting tube 1 and the second connecting tube 6 are connected, the first connecting tube 1 and the second connecting tube 6 rotate due to vibration during driving of the car, but through the cooperation of the positioning assembly 8 and the second clamp 12, the distance between the rotating flange 7 and the fixed flange 2 will not change, thereby preventing the second connecting tube 6 from separating from the first connecting tube 1, and having an anti-falling function.

[0038] The working principle of the present invention is: when the second connecting tube 6 needs to be connected to the first connecting tube 1, the threaded barrel 5 is inserted into the inside of the threaded groove 3, and at the same time, the second clamp 12 is aligned with the positioning assembly 8, and the second connecting tube 6 is rotated so that the rotating flange 7 is close to the fixed flange 2, and the second clamp 12 moves toward the inside of the positioning assembly 8. Since the first clamp 82 and the second clamp 12 are provided with chamfers, the second clamp 12 causes the two first clamps 82 to rotate, and the spring 89 is compressed. When the second clamp 12 completely enters the inside of the fixed sleeve 81, due to the reset action of the spring 89, the second clamp 12 is limited by the two first clamps 82. This structure effectively avoids the second connecting tube 6 from being separated from the first connecting tube 1 during long-term use, thereby improving stability.

[0039] When the second connecting tube 6 and the first connecting tube 1 need to be disassembled, turn the knob 87, and the knob 87 drives the second pulley 86 and the first pulley 85 to rotate together. Due to the cooperation of the transmission belt 810, multiple first clamps 82 rotate. Due to the setting of the semicircular gear 811, all the first clamps 82 are opened, and the limit of the first clamp 82 on the second clamp 12 is released. At this time, the second connecting tube 6 can be disassembled from the first connecting tube 1 by rotating the second connecting tube 6.

[0040] The rubber hose 9 adopts an innovative multi-layer composite structure design, which significantly improves its fracture resistance while maintaining its flexibility. The hydrogenated nitrile rubber inner layer 91 provides excellent oil and high temperature resistance and can operate at -45°C to 160°C. The spirally wound aramid fiber reinforced belt 92 and the gradient transition layer 93 work together to achieve optimized stress distribution. The combination of the stainless steel support bar 942 and the carbon fiber reinforcement sheet 943 in the bending section increases the local bending strength by 300%. Combined with the surface microstructure design and plasma treatment process, the fatigue life of the product reaches 2-3 times that of the traditional structure with only a 15% increase in weight, and the installation bending radius can be reduced to 3 times the pipe diameter, which comprehensively solves the fracture failure problem of automotive rubber hoses under high temperature, vibration and bending conditions.

[0041] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. An automotive rubber tube assembly with an anti-fracture structure, comprising a first connecting tube (1) and a second connecting tube (6), wherein one end of the first connecting tube (1) is fixedly connected to a fixing flange (2), a threaded groove (3) is provided on one side of the fixing flange (2), and a sealing ring (4) is installed inside the threaded groove (3). It is characterized by: The first connecting tube (1) and the second connecting tube (6) are both provided with grooves (10) on their exteriors, and the first connecting tube (1) and the second connecting tube (6) are both provided with rubber hoses (9) on their exteriors, and a metal tie (11) is provided on the exterior of the rubber hose (9) and at the grooves (10), and a positioning assembly (8) is provided in an equidistant annular manner on the other side of the threaded groove (3).

2. The automobile rubber hose assembly with an anti-fracture structure according to claim 1, characterized in that: The rubber hose (9) comprises an inner rubber layer (91), the outer portion of the inner rubber layer (91) is spirally wound with a reinforcement tape (92), the outer portion of the reinforcement tape (92) is filled with a transition layer (93), and the outer portion of the transition layer (93) is adhered with an outer rubber layer (94).

3. The automobile rubber hose assembly with an anti-fracture structure according to claim 2, characterized in that: The material of the reinforcement belt (92) is aramid fiber, and the material of the transition layer (93) is silicone rubber.

4. The automobile rubber hose assembly with an anti-fracture structure according to claim 2, characterized in that: The outer rubber layer (94) includes a base layer (941), the base layer (941) is attached to the outside of the transition layer (93), a stainless steel support bar (942) is embedded in the outer side of the bending of the base layer (941), and a reinforcing sheet (943) is attached to the outer side of the bending of the base layer (941).

5. The automobile rubber tube assembly with an anti-fracture structure according to claim 4, characterized in that: The reinforcing sheet (943) is made of carbon fiber, and the base layer (941) is made of EPDM rubber.

6. The automobile rubber hose assembly with an anti-fracture structure according to claim 1, characterized in that: The positioning assembly (8) comprises a fixing sleeve (81), the fixing sleeve (81) being fixedly mounted on the other side of the fixing flange (2), two first clamping members (82) being rotatably mounted inside the fixing sleeve (81), the exteriors of the two first clamping members (82) being fixedly connected with semicircular gears (811), the two semicircular gears (811) being meshed with each other, a reset assembly being provided on one side of the two first clamping members (82), and a driving assembly being provided on the exterior of one of the first clamping members (82).

7. The automobile rubber hose assembly with an anti-fracture structure according to claim 6, characterized in that: The reset assembly includes two positioning columns (88), the two positioning columns (88) are respectively fixedly connected to the opposite sides of the two first clamps (82), and the outsides of the two positioning columns (88) are both sleeved with springs (89), and one end of the spring (89) is fixedly connected to the fixed sleeve (81).

8. The automobile rubber hose assembly with an anti-fracture structure according to claim 6, characterized in that: The driving assembly includes a first gear (83), the first gear (83) is fixedly mounted on the outside of one of the first clamping members (82), the outside of the first gear (83) is meshedly connected with a second gear (84), and the second gear (84) is rotatably mounted on the fixed sleeve (81), one end of the second gear (84) passes through the fixed sleeve (81) and is connected to a first pulley (85), one side of the first pulley (85) is fixedly connected to a second pulley (86), one side of the second pulley (86) is fixedly connected to a knob (87), and a transmission belt (810) is provided between the first pulley (85) and the second pulley (86).

9. The automobile rubber hose assembly with an anti-fracture structure according to claim 1, characterized in that: One end of the second connecting pipe (6) is fixedly connected to a threaded barrel (5), and the threaded barrel (5) is adapted to the threaded groove (3).

10. The automobile rubber tube assembly with an anti-fracture structure according to claim 6, characterized in that: A rotating flange (7) is rotatably mounted on the outside of the second connecting pipe (6), and a second clamping member (12) is fixedly connected to one side of the rotating flange (7) in an equidistant annular manner, and the second clamping member (12) is adapted to fit the first clamping member (82).

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