CN117386915A

CN117386915A - Pipeline joint of automobile power system

Info

Publication number: CN117386915A
Application number: CN202311695667.3A
Authority: CN
Inventors: 沈皓; 施明刚; 高文玉; 邵晓波; 刘海英
Original assignee: Jiangyin Pivot Automotive Products Co ltd
Current assignee: Jiangyin Pivot Automotive Products Co ltd
Priority date: 2023-12-12
Filing date: 2023-12-12
Publication date: 2024-01-12
Anticipated expiration: 2043-12-12
Also published as: CN117386915B

Abstract

The invention relates to the technical field of pipe joints, and particularly discloses an automobile power system pipeline joint, wherein a joint body is provided with a first cavity and a second cavity which are communicated at an angle of 90 degrees, a first joint is arranged at an inflow port, and a second joint is arranged at an outflow port; the second sleeve is sleeved outside the fixed shaft and is in limiting sliding connection with the fixed shaft along the length direction of the first cavity, the first sleeve is sleeved outside the second sleeve and is elastically connected with the second sleeve, and the first sleeve is in limiting sliding connection with the second sleeve along the length direction of the first cavity; the inside wall that first connects is equipped with a plurality of bracing pieces, and the bracing piece is articulated with first joint, and the tip of bracing piece is equipped with the supporter, and first sleeve is equipped with the top pushing part in inflow entrance, top pushing part and a plurality of bracing pieces swing joint, is equipped with the pressure plate on the second sleeve. The pipeline joint of the automobile power system reduces the joint loosening risk and ensures the stability, reliability and safety of the pipeline joint.

Description

Pipeline joint of automobile power system

Technical Field

The invention relates to the technical field of pipe joints, in particular to an automobile power system pipeline joint.

Background

The automotive fuel supply line refers to a conduit in the automotive power system connecting the fuel tank and the engine fuel system for delivering fuel to the engine for combustion. When the fuel supply line needs to bypass other components or obstacles, the pipeline joint with the bending angle of 90 degrees can be used for changing the direction of the pipeline, so that the pipeline layout is more flexible and can adapt to actual requirements.

The Chinese patent of the invention with publication number of CN111810749B discloses an automobile oil pipe connecting device, a turbulent flow mechanism is arranged in an oil pipe joint, oil passes through the turbulent flow mechanism, liquid passing through the oil pipe joint can be jammed to a certain extent, the hydraulic pressure of the oil pipe joint is increased, so that a sealing rubber pipe fitting is stressed and expanded outwards, the sealing rubber pipe fitting is always stuck to the inner side of the oil pipe joint, multiple sealing effects are realized, the sealing strength is improved, and the condition that the liquid seeps out due to overlarge pressure in the oil pipe is avoided. However, when the fuel oil system supplies oil, vibration and pressure impact can be generated when hydraulic oil flows in the system or is subjected to pressure change, and the impact can be transmitted to the fuel oil system, so that abrasion of a joint is accelerated, and the joint is loosened or damaged; meanwhile, the steering of the oil flow in the fuel system can apply periodic stretching and extrusion force to the automobile oil pipe connecting device, fatigue fracture of joint materials can be caused for a long time, the joint loosening risk is increased, and the reliability and the safety are poor.

Disclosure of Invention

The invention provides a pipeline joint of an automobile power system, and aims to solve the problems that an automobile oil pipe connecting device in the related art is easy to loosen and damage due to long-term oil impact and has poor reliability.

The invention relates to an automobile power system pipeline connector, which comprises a connector body, wherein the connector body is provided with a first cavity and a second cavity which are communicated at an angle of 90 degrees, the first cavity is communicated with the outside through an inflow port, the second cavity is communicated with the outside through an outflow port, the position of the inflow port is provided with a first connector, and the position of the outflow port is provided with a second connector; the connector comprises a connector body, a first cavity and a second cavity, wherein the connector body is internally provided with a fixed shaft, a second sleeve is sleeved outside the fixed shaft and is elastically connected with the fixed shaft, the second sleeve is in limit sliding connection with the fixed shaft along the length direction of the first cavity, a first sleeve is sleeved outside the second sleeve and is elastically connected with the second sleeve, and the first sleeve is in limit sliding connection with the second sleeve along the length direction of the first cavity; the inner side wall of the first joint is provided with a plurality of support rods, the support rods are hinged with the first joint, the end parts of the support rods are provided with support bodies, the first sleeve is provided with pushing parts at the inflow inlet, the pushing parts are movably connected with the support rods, and the second sleeve is provided with a pressure plate.

Preferably, the second cavity comprises a buffer cavity and an outflow cavity, one end of the buffer cavity is communicated with the first cavity, the other end of the buffer cavity is communicated with the outflow cavity through a reducing cavity, the cross-sectional area of the buffer cavity is larger than that of the first cavity, and the cross-sectional area of the outflow cavity is equal to that of the first cavity.

Preferably, the connector body is internally provided with a fixing frame, the first sleeve is in limiting sliding connection with the fixing frame along the length direction of the first cavity, a limiting ring is arranged outside the first sleeve, and the limiting ring is located between the fixing frame and the pressure plate.

Preferably, the shape of the pressure plate is matched with the cross section of the first cavity, and a notch is formed on one side of the pressure plate, which is close to the outflow port; the pressure plate is provided with a limiting part, the inner side wall of the joint body is provided with a limiting groove, the limiting groove extends along the length direction of the first cavity, and the limiting part is in sliding fit with the limiting groove.

Preferably, the number of the supporting rods is three, the three supporting rods are uniformly distributed along the circumferential direction of the first joint, the supporting bodies are spherical, the pushing part faces the inflow opening and is hemispherical and convex, three telescopic rods are arranged on the outer circumferential side of the pushing part, and the telescopic rods are rotationally connected with the supporting rods.

Preferably, the first joint is sleeved with a fastening sleeve, and an installation space is formed between the first joint and the fastening sleeve.

Preferably, the connector body further comprises a first threaded portion, the first threaded portion is located at one end, away from the inflow port, of the first connector, the first threaded portion is in threaded connection with the fastening sleeve, and a fastening ring is arranged at one end, close to the inflow port, of the fastening sleeve; the first joint is close to one end of the inflow port is provided with a clamping part, and the clamping part is in a tapered shape which gradually reduces towards the direction of the inflow port.

Preferably, the second joint has a second threaded portion on the outer peripheral side thereof.

Preferably, the second cavity further comprises a filter cavity, the filter cavity is located on one side, close to the inflow port, of the buffer cavity, the filter cavity is communicated with the first cavity and the variable-diameter cavity, the filter cavity is provided with a filter plate, the connector body is provided with an opening and closing plate capable of closing the filter cavity at the first cavity, the opening and closing plate is provided with a triggering portion, and the pressure plate can push the opening and closing plate to move through the triggering portion when the pressure plate slides in a limiting mode in the length direction of the first cavity.

Preferably, the cross section of the triggering part is isosceles triangle, and the corner of the triggering part is curved.

By adopting the technical scheme, the invention has the beneficial effects that: through set up the pressure plate towards the inflow port in the pipeline connects, vibration and impact force that causes when making the pressure plate turn to fluid are cushioned to through the removal of pressure plate, make pushing away the portion and drive the bracing piece and remove, make the bracing piece give the extrusion force of the outside expansion of first joint, and this extrusion force can increase along with the increase of fluid pressure, thereby increase the tightness and the leakproofness between first joint and the fuel line, reduce the not hard up risk of joint, increase the withstand voltage performance of pipeline joint, ensure the stability, reliability and the security of pipeline joint.

Drawings

Fig. 1 is a schematic view of an external structure of a pipe joint of an automotive power system according to an embodiment.

Fig. 2 is a schematic diagram of an internal structure of a pipe joint of an automotive power system according to an embodiment.

Fig. 3 is an enlarged view at a in fig. 2.

Fig. 4 is a schematic structural view of a pressure plate according to an embodiment.

Reference numerals:

10. a joint body; 110. an inflow port; 120. an outflow port; 130. a limit groove; 140. a first threaded portion; 150. an opening plate; 1510. a trigger part; 20. a first cavity; 30. a second cavity; 310. a buffer cavity; 320. a variable diameter cavity; 330. outflow cavity; 340. a filter cavity; 3410. a filter plate; 40. a first joint; 410. a support rod; 420. a support body; 430. a clamping part; 50. a second joint; 510. a second threaded portion; 60. a first sleeve; 610. a pushing part; 6110. a telescopic rod; 620. a fixing frame; 630. a limiting ring; 70. a second sleeve; 710. a pressure plate; 7110. a limit part; 720. a first elastic member; 80. a fixed shaft; 810. a second elastic member; 90. a fastening sleeve; 910. a fastening ring.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.

Example 1

As shown in fig. 1 to 4, the pipe joint for an automobile power system according to the present invention comprises a joint body 10, wherein the joint body 10 has a first cavity 20 and a second cavity 30 which are communicated at an angle of 90 degrees, the first cavity 20 is communicated with the outside through an inflow port 110, the second cavity 30 is communicated with the outside through an outflow port 120, the inflow port 110 is provided with a first joint 40, and the outflow port 120 is provided with a second joint 50. The first connector 40 is adapted to be connected to a first fuel line and the second connector 50 is adapted to be connected to a second fuel line, from which oil enters the first chamber 20 via the inflow opening 110 and is turned 90 degrees to flow into the second chamber 30 via the outflow opening 120.

As shown in fig. 2, a fixed shaft 80 is disposed in the joint body 10, the fixed shaft 80 extends along the length direction of the first cavity 20, a second sleeve 70 is sleeved outside the fixed shaft 80, the second sleeve 70 is connected with the fixed shaft 80 through a second elastic member 810, the second elastic member 810 is used for helping the second sleeve 70 to reset, the second sleeve 70 is in sliding connection with the fixed shaft 80 along the length direction of the first cavity 20, a first sleeve 60 is sleeved outside the second sleeve 70, the first sleeve 60 is connected with the second sleeve 70 through a first elastic member 720, and the first sleeve 60 is in sliding connection with the second sleeve 70 along the length direction of the first cavity 20. In this embodiment, the second elastic member 810 is a compression spring, the first elastic member 720 is a tension spring, and the first elastic member 720 is used for connecting the first sleeve 60 and the second sleeve 70.

As shown in fig. 3, the inner side wall of the first joint 40 is provided with a plurality of support rods 410, the support rods 410 are hinged with the first joint 40, the end parts of the support rods 410 are provided with support bodies 420, the first sleeve 60 is provided with pushing parts 610 at the inflow inlet 110, and the pushing parts 610 are movably connected with the plurality of support rods 410; in this embodiment, the number of the support rods 410 is three, the three support rods 410 are uniformly distributed along the circumferential direction of the first joint 40, the support body 420 is spherical, the pushing portion 610 is hemispherical and convex toward the inflow opening 110, three telescopic rods 6110 are disposed on the outer circumferential side of the pushing portion 610, the three telescopic rods 6110 are uniformly distributed along the circumferential direction of the pushing portion 610, and the telescopic rods 6110 are rotationally connected with the support rods 410. The pushing portion 610 is used for enhancing stability of the three supporting bodies 420 when supporting each other; the pushing part 610 can drive the supporting rod 410 to move through the telescopic rod 6110, and the supporting rod 410 can give the extrusion force of the outward expansion of the first joint 40 through the mutual supporting force between the three supporting bodies 420 and the interaction force between the supporting bodies 420 and the pushing part 610, so that the tightness and the tightness between the first joint 40 and the first fuel pipeline are improved.

As shown in fig. 2 and 4, the second sleeve 70 is provided with a pressure plate 710, the shape of the pressure plate 710 is matched with the cross section of the first cavity 20, and one side of the pressure plate 710, which is close to the outflow opening 120, is provided with a notch; the pressure plate 710 is provided with a limiting portion 7110, the inner side wall of the joint body 10 is provided with a limiting groove 130, the limiting groove 130 extends along the length direction of the first cavity 20, and the limiting portion 7110 is in sliding fit with the limiting groove 130. The pressure plate 710 is used for buffering vibration and impact force caused when the oil is turned, and moves along the length direction of the first cavity 20 according to the change of the oil pressure born by the pressure plate, the greater the oil pressure born by the pressure plate 710, the farther the pressure plate 710 is away from the inflow port 110, the smaller the rotation angle of the support rod 410 relative to the cross section of the first cavity 20, the greater the interaction force between the three support bodies 420, and the greater the extrusion force of the support rod 410 for outward expansion of the first joint 40.

As shown in fig. 2, a fixing frame 620 is disposed in the joint body 10, the first sleeve 60 is in limiting sliding connection with the fixing frame 620 along the length direction of the first cavity 20, a limiting ring 630 is disposed outside the first sleeve 60, and the limiting ring 630 is located between the fixing frame 620 and the pressure plate 710. The limiting ring 630 is used for limiting the first sleeve 60, so as to prevent the first sleeve 60 from falling out of the inflow port 110.

As shown in fig. 2, the second cavity 30 includes a buffer cavity 310 and an outflow cavity 330, one end of the buffer cavity 310 is communicated with the first cavity 20, the other end of the buffer cavity 310 is communicated with the outflow cavity 330 through a variable diameter cavity 320, the cross-sectional area of the buffer cavity 310 is larger than that of the first cavity 20, and the cross-sectional area of the outflow cavity 330 is equal to that of the first cavity 20. The buffer cavity 310 is positioned at the position where the first cavity 20 flows into the second cavity 30, namely, at a 90-degree corner, the cross section area of the buffer cavity 310 is larger than that of the first cavity 20, so that the oil flow rate at the oil turning position can be slowed down, the impact force caused by the oil turning is reduced, the abrasion of a pipeline joint is reduced, and the loosening risk of the pipeline joint is reduced; the cross-sectional area of the outflow cavity 330 is equal to that of the first cavity 20, so that the flow velocity of the fuel pipeline at the two ends of the pipeline joint is equal, and the conveying efficiency of the fuel pipeline is ensured.

As shown in fig. 2, the first connector 40 is sleeved with a fastening sleeve 90, and an installation space is formed between the first connector 40 and the fastening sleeve 90 for installing a first fuel pipeline. The joint body 10 further includes a first threaded portion 140, the first threaded portion 140 is located at an end of the first joint 40 away from the inflow port 110, the first threaded portion 140 is in threaded connection with the fastening sleeve 90, and a fastening ring 910 is disposed at an end of the fastening sleeve 90 near the inflow port 110; the first connector 40 is provided with a clamping part 430 at one end near the inflow port 110, the clamping part 430 is tapered gradually shrinking towards the direction of the inflow port 110, and the clamping part 430 is used for preventing the first fuel oil pipeline from being separated; the second joint 50 is provided on the outer peripheral side with a second screw portion 510 for mounting a second fuel oil pipe. The fastening sleeve 90 serves to further enhance the tightness and sealing between the first joint 40 and the first fuel line; the threaded connection has strong reliability and convenient disassembly.

This automobile power system management connects through setting up the pressure board 710 towards inflow port 110 in the pipeline connects, make pressure board 710 cushion vibration and impact force that causes when turning to fluid, and through the removal of pressure board 710, make pushing away portion 610 drive bracing piece 410 and remove, make bracing piece 410 give the extrusion force of the outside expansion of first joint 40, and this extrusion force can increase along with the increase of fluid pressure, thereby increase the tightness and the leakproofness between first joint 40 and the first fuel line, reduce the not hard up risk of joint, increase the withstand voltage performance of pipeline joint, ensure the stability of pipeline joint, reliability and security.

Example two

As shown in fig. 2 and fig. 4, compared with the first embodiment, the second cavity 30 further includes a filter cavity 340, the filter cavity 340 is located at one side of the buffer cavity 310 near the inflow port 110, the filter cavity 340 is communicated with the first cavity 20 and the reducing cavity 320, the filter cavity 340 is provided with a filter plate 3410, the connector body 10 is provided with an opening and closing plate 150 capable of closing the filter cavity 340 at the first cavity 20, the opening and closing plate 150 is provided with a trigger portion 1510, the trigger portion 1510 is elastically connected with the opening and closing plate 150, and when the pressure plate 710 slides in a limited manner along the length direction of the first cavity 20, the opening and closing plate 150 can be pushed to move by the trigger portion 1510; the cross section of the trigger 1510 is isosceles triangle, and the corner of the trigger 1510 is curved.

In the first embodiment, if the fuel system of the automobile does not supply fuel to the automobile, the fuel pump can stop running, the fuel pressure is reduced, the flowing speed of the fuel is reduced, and even the fuel stops, at this time, the fuel in the pipeline gradually stagnates, deposits on the wall of the pipeline or gathers at the bottom of the pipeline, and if the fuel stays in the pipeline for a long time, the fuel degradation and pollution can be caused, and adverse effects are caused on the fuel system.

For this reason, in this embodiment, the filter cavity 340 is added in the connector body 10, when the fuel system is restarted after the vehicle is stopped for a long time or not used for a long time, the fuel remaining in the first cavity 20 will enter the filter cavity 340 through the notch of the pressure plate 710, be filtered by the filter plate 3410, and then enter the second fuel pipeline, so as to realize the filtration of the residual fuel, and reduce the adverse effect of the degraded fuel on the fuel system; when the residual oil is filtered, the fuel flow is gradually increased, the pressure plate 710 gradually starts to bear the oil pressure, the pressure plate 710 drives the opening plate 150 to close the filtering cavity 340 through the trigger 1510, and the oil flows out through the buffer cavity 310; until the oil pressure borne by the pressure plate 710 reaches a certain value, the pressure plate 710 can pass over the trigger portion 1510 and cause the support rod 410 to give an outwardly expanding pressing force to the first joint 40 through the first sleeve 60, thereby increasing the tightness and sealing between the first joint 40 and the first fuel line.

The rest of the present embodiment can refer to the first embodiment, and will not be described herein.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the invention.

Claims

1. The automobile power system pipeline connector is characterized by comprising a connector body (10), wherein the connector body (10) is provided with a first cavity (20) and a second cavity (30) which are communicated at an angle of 90 degrees, the first cavity (20) is communicated with the outside through an inflow port (110), the second cavity (30) is communicated with the outside through an outflow port (120), a first connector (40) is arranged at the inflow port (110), and a second connector (50) is arranged at the outflow port (120); the connector is characterized in that a fixed shaft (80) is arranged in the connector body (10), a second sleeve (70) is sleeved outside the fixed shaft (80), the second sleeve (70) is elastically connected with the fixed shaft (80), the second sleeve (70) is in limit sliding connection with the fixed shaft (80) along the length direction of the first cavity (20), a first sleeve (60) is sleeved outside the second sleeve (70), the first sleeve (60) is elastically connected with the second sleeve (70), and the first sleeve (60) is in limit sliding connection with the second sleeve (70) along the length direction of the first cavity (20). The inside wall that first joint (40) is equipped with a plurality of bracing pieces (410), bracing piece (410) with first joint (40) are articulated, the tip of bracing piece (410) is equipped with supporter (420), first sleeve (60) are in inflow port (110) department is equipped with pushing away portion (610), pushing away portion (610) and a plurality of bracing piece (410) swing joint, be equipped with pressure plate (710) on second sleeve (70).

2. The automobile power system pipeline joint according to claim 1, wherein the second cavity (30) comprises a buffer cavity (310) and an outflow cavity (330), one end of the buffer cavity (310) is mutually communicated with the first cavity (20), the other end of the buffer cavity (310) is mutually communicated with the outflow cavity (330) through a reducing cavity (320), the cross-sectional area of the buffer cavity (310) is larger than that of the first cavity (20), and the cross-sectional area of the outflow cavity (330) is equal to that of the first cavity (20).

3. The automobile power system pipeline joint according to claim 1, wherein a fixing frame (620) is arranged in the joint body (10), the first sleeve (60) is in limit sliding connection with the fixing frame (620) along the length direction of the first cavity (20), a limit ring (630) is arranged outside the first sleeve (60), and the limit ring (630) is located between the fixing frame (620) and the pressure plate (710).

4. An automotive power system pipe joint according to claim 2, characterized in that the pressure plate (710) is shaped to fit the cross section of the first cavity (20), the pressure plate (710) having a gap on the side near the outflow opening (120); be equipped with spacing portion (7110) on pressure board (710), the inside wall of joint body (10) has spacing groove (130), spacing groove (130) are followed the length direction of first cavity (20) extends, spacing portion (7110) with spacing groove (130) sliding fit.

5. A pipe joint for an automotive power system according to any one of claims 1 to 3, wherein the number of the support rods (410) is three, the three support rods (410) are uniformly distributed along the circumferential direction of the first joint (40), the support body (420) is spherical, the pushing portion (610) is hemispherical and convex toward the inflow opening (110), three telescopic rods (6110) are provided on the outer circumferential side of the pushing portion (610), and the telescopic rods (6110) are rotatably connected with the support rods (410).

6. A vehicle power system pipe joint according to any one of claims 1 to 3, characterized in that the first joint (40) is provided with a fastening sleeve (90) externally, and that there is an installation space between the first joint (40) and the fastening sleeve (90).

7. The automotive power system pipe joint according to claim 6, characterized in that the joint body (10) further comprises a first threaded portion (140), the first threaded portion (140) being located at an end of the first joint (40) facing away from the inflow opening (110), the first threaded portion (140) being threadedly connected with the fastening sleeve (90), the fastening sleeve (90) being provided with a fastening ring (910) at an end adjacent to the inflow opening (110); the first joint (40) is provided with a clamping part (430) near one end of the inflow port (110), and the clamping part (430) is tapered gradually shrinking towards the direction of the inflow port (110).

8. An automotive power system pipe joint according to any one of claims 1 to 2, characterized in that the second joint (50) is provided on the outer peripheral side with a second threaded portion (510).

9. The automobile power system pipeline joint according to claim 4, wherein the second cavity (30) further comprises a filter cavity (340), the filter cavity (340) is located at one side of the buffer cavity (310) close to the inflow port (110), the filter cavity (340) is communicated with the first cavity (20) and the reducing cavity (320), the filter cavity (340) is provided with a filter plate (3410), the joint body (10) is provided with an opening and closing plate (150) capable of closing the filter cavity (340) at the first cavity (20), the opening and closing plate (150) is provided with a trigger part (1510), and when the pressure plate (710) is limited to slide along the length direction of the first cavity (20), the opening and closing plate (150) can be pushed to move through the trigger part (1510).

10. The automotive power system pipe joint according to claim 9, wherein the cross section of the trigger portion (1510) is isosceles triangle, and the corner of the trigger portion (1510) is curved.