Three-way connector with pressure selection function

Abstract

The utility model discloses a three-way connector with a pressure selection function, which belongs to the technical field of equipment manufacturing, and comprises a connector main body, a valve core, a sealing gasket and a sealing end cover, and the connector main body comprises a through cavity and a water outlet cavity communicated with the through cavity; the valve element is arranged in the through cavity and is in sliding connection with the connector body. The sealing gaskets are connected with the valve element, and the two sealing gaskets are arranged on the two sides of the valve element correspondingly. The sealing end covers are connected with the connector body, correspond to the sealing gaskets one to one and are used for abutting against the sealing gaskets. The three-way connector with the pressure selection function is used for an electrohydraulic steering transmission system of an electromobile chassis, the number of elements and pipelines in the system is reduced, arrangement of the system pipelines is simplified, the requirement for integrated design is met, and the problems that in the prior art, loop selection cannot be conducted autonomously according to different pressures in the pipelines, and the cost is low are solved. And the device is simple in structure, remarkable in acting effect and suitable for being widely popularized.

Description

Technical Field

[0001] The utility model relates to the technical field of equipment manufacturing, in particular to a three-way connector with a pressure selection function. Background Art

[0002] The chassis electro-hydraulic steering system is a system-level product for electric vehicle chassis and special vehicles. The system consists of a quantitative pump, a remote-controlled overflow valve, a reversing control valve group, a front axle actuator, a rear axle actuator, etc. In order to achieve energy saving, the system collects the maximum pressure required by multiple actuators, controls the remote-controlled overflow valve, and reduces the overflow pressure of the system, thereby achieving energy saving.

[0003] In order to collect the maximum pressure required by multiple actuators, control the layout of the pipelines, reduce the number of pipelines and hydraulic components, and the component needs to meet the environmental requirements of -40 to -45°C, it is necessary to develop a three-way connector with pressure selection function. Utility Model Content

[0004] In view of the above-mentioned defects, the technical problem solved by the utility model is to provide a three-way connector with a pressure selection function to solve the problems existing in the existing technology, such as the inability to independently select a circuit according to the different pressures in the pipeline, resulting in inconvenience in use; the excessive number of components in the control pipeline and high cost of use; and the inability to meet the requirements of long-term use in a low temperature environment.

[0005] The utility model provides a three-way connector with a pressure selection function, comprising:

[0006] The joint body comprises a through cavity and a water outlet cavity connected with the through cavity;

[0007] A valve core is disposed in the through cavity and is slidably connected to the joint body;

[0008] A sealing gasket connected to the valve core, wherein two sealing gaskets are provided and are respectively arranged on both sides of the valve core;

[0009] The sealing end cover is connected to the joint body, and the sealing end cover corresponds to the sealing gasket one by one and is used to abut against the sealing gasket.

[0010] Preferably, a sealing boss is provided on a side of the sealing end cover close to the valve core, and the sealing boss is used to abut against the sealing gasket.

[0011] Preferably, a mounting groove for mounting the sealing gasket is provided on the valve core, and the mounting groove corresponds to the sealing gasket one by one.

[0012] Preferably, the axial length of the valve core is greater than the diameter of the water outlet cavity; the spacing between the two sealing end covers is greater than or equal to twice the diameter of the water outlet cavity and less than three times the diameter of the water outlet cavity.

[0013] Preferably, the through cavity comprises:

[0014] A sliding part, connected to the water outlet cavity, wherein the valve core is arranged in the sliding part;

[0015] A limiting portion, which is in communication with the sliding portion, and the limiting portion is connected to the sealing end cover and corresponds one-to-one with the sealing end cover;

[0016] The external connecting portion is arranged on a side of the limiting portion away from the sliding portion and is connected to the limiting portion. The external connecting portion corresponds to the limiting portion one-to-one. The diameter of the limiting portion is larger than the diameter of the sliding portion and smaller than the diameter of the external connecting portion. The length of the sealing end cover is smaller than the length of the limiting portion.

[0017] Preferably, the water outlet cavity is arranged perpendicular to the through cavity, and the two sealing end covers are symmetrically arranged on both sides of the water outlet cavity.

[0018] Preferably, the sealing end cover is connected to the joint body via threads; or / and a plurality of mounting holes are circumferentially provided on one side of the sealing end cover away from the valve core.

[0019] Preferably, a display component is also included, and the display component includes:

[0020] An indicator plate connected to the joint body, and provided with an indication number;

[0021] A pointer, used to cooperate with the indicator plate to display the pressure value;

[0022] A first rotating shaft, one end of which is connected to the pointer, and the other end of which passes through the indicator plate and is rotatably connected to the joint body;

[0023] A speed change assembly connected to the first rotating shaft, wherein the joint body is provided with an accommodation cavity for accommodating the speed change assembly;

[0024] A second rotating shaft connected to the speed change assembly and rotatably connected to the joint body;

[0025] A traction assembly has one end connected to the second rotating shaft and the other end connected to the valve core, and the valve core drives the traction assembly and the second rotating shaft to rotate.

[0026] Preferably, the traction assembly comprises:

[0027] A slider is slidably connected to the valve core, and the valve core is provided with a sliding groove adapted to the slider;

[0028] A traction rod, rotatably connected to the slider;

[0029] A traction cylinder has one end connected to the second rotating shaft and the other end slidably connected to the traction rod. The traction cylinder is provided with a contraction cavity for accommodating the traction rod. The joint body is provided with a driving groove. The traction cylinder, the traction rod and the second rotating shaft are all arranged in the driving groove.

[0030] Preferably, the sealing gasket is made of nylon; or / and a sealing member is provided between the sealing end cover and the joint body, and the sealing member is made of nylon.

[0031] It can be seen from the above scheme that the three-way connector with pressure selection function provided by the utility model is used for the electro-hydraulic steering transmission system of the chassis of electric vehicles, which simplifies the layout of the system pipelines and meets the requirements of integrated design. The device can realize the pressure selection function by setting a sliding connection between the valve core and the connector body, which is more convenient to use; the structure is simple, and a small pressure difference can drive the valve core to move, and the flow requirement of the system is extremely low, and the manufacturing and use costs are lower. The utility model solves the problems existing in the current technology that the circuit cannot be selected independently according to the different pressures in the pipeline, resulting in inconvenience in use; the number of original parts of the control pipeline is too large, and the use cost is high; it cannot meet the problems of long-term use in low temperature environments. The effect is significant and suitable for wide promotion. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0033] Figure 1 A three-dimensional structural schematic diagram of a three-way connector with a pressure selection function provided by the utility model;

[0034] Figure 2 A schematic diagram of the side structure of a three-way connector with a pressure selection function provided by the utility model;

[0035] Figure 3 This is a structural schematic diagram of a three-way joint valve core with a pressure selection function provided by the utility model;

[0036] Figure 4 For along Figure 2 The cross-sectional structure diagram of the EE line;

[0037] Figure 5 for Figure 4 Schematic diagram of the enlarged structure at D in FIG.

[0038] Figure 6 It is a structural schematic diagram of the electro-hydraulic steering transmission system of the electric vehicle chassis;

[0039] Figure 7 A schematic cross-sectional view of another three-way connector with a pressure selection function provided by the utility model;

[0040] Figure 8 A schematic diagram of the structure of another three-way connector display assembly with a pressure selection function provided by the utility model;

[0041] Fig. 9 for Figure 7 Schematic diagram of the enlarged structure at F in FIG.

[0042] Figure 1-9 middle:

[0043] 1. Connector body; 2. Valve core; 3. Sealing gasket; 4. Sealing end cover; 5. Display assembly; 11. Through cavity; 12. Water outlet cavity; 13. Accommodating cavity; 14. Driving groove; 21. Mounting groove; 22. Slide groove; 41. Sealing boss; 42. Mounting card hole; 51. Indicator plate; 52. Pointer; 53. First rotating shaft; 54. Speed ​​change assembly; 55. Second rotating shaft; 56. Traction assembly; 111. Sliding part; 112. Limiting part; 113. External part; 541. First bevel gear; 542. Second bevel gear; 543. Third bevel gear; 544. Main gear; 545. Slave gear; 561. Sliding block; 562. Traction rod; 563. Traction cylinder. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0045] Please also read Figures 1 to 6Now, a specific implementation of a three-way joint with a pressure selection function provided by the utility model is described. The three-way joint with a pressure selection function includes a joint body 1, a valve core 2, a sealing gasket 3, and a sealing end cover 4, wherein the joint body 1 includes a through cavity 11 and a water outlet cavity 12 connected to the through cavity 11; the valve core 2 is arranged in the through cavity 11 and is slidably connected to the joint body 1; the sealing gasket 3 is connected to the valve core 2, and two sealing gaskets 3 are provided and are respectively arranged on both sides of the valve core 2; the sealing end cover 4 is connected to the joint body 1, and the sealing end cover 4 corresponds to the sealing gasket 3 one by one, and is used to abut against the sealing gasket 3.

[0046] For illustration purposes, see Figure 1 , take any point in the space as the origin, take the setting direction of the water outlet cavity 12 as the Z axis, take the setting direction of the through cavity 11 as the X axis, and take the straight line direction perpendicular to both the X axis and the Z axis as the Y axis to establish a rectangular coordinate system, wherein the XY plane is a horizontal plane, the direction indicated on the horizontal plane is the horizontal direction, and the direction indicated by the Z axis is the vertical direction.

[0047] In this embodiment, the sealing end cover 4 is connected to the joint body 1 by threads; the valve core 2 is provided with a mounting groove 21 for installing the sealing gasket 3, and the mounting groove 21 corresponds to the sealing gasket 3 one by one. The material of the sealing gasket 3 is nylon, and the sealing gasket 3 is a circular gasket used to ensure the tightness of the connection between the sealing end cover 4 and the valve core 2; a sealing member is provided between the sealing end cover 4 and the joint body 1, and the material of the sealing member is nylon. The sealing gasket 3 and the sealing member made of nylon can be used in an environment of -40 to -45°C. By setting the mounting groove 21, the sealing gasket 3, and the sealing member, zero leakage can be achieved during the use of the structure, so that it can be used for pressure selection conditions with very low flow, and has a wider range of applications. Here, as long as the above-mentioned sealing gasket 3 and the relevant performance functions of the sealing member can be achieved, they are all within the scope of protection of this application document.

[0048] Insert the two sealing pads 3 into the installation grooves 21 at both ends of the valve core 2, and then insert the valve core 2 into the through cavity 11 of the joint body 1. The through cavity 11 is designed with internal threads on both sides, and tighten the two sealing end covers 4 onto the internal threads respectively. Figure 6 The chassis hydraulic system involves two actuators (double-acting hydraulic cylinders), and there are five pressure points that need to be collected, namely A1 port, B1 port, A2 port, B2 port and P port. Four three-way joints are installed in the system pipeline, and the spring setting pressure of the remote control relief valve is 2MPa. Through actual tests, when the actuator works under different working conditions, the pressure measured at the pressure measuring point MP is the highest pressure of the actuator working port + about 2MPa pressure.

[0049] When working, the pressure of each actuator is transmitted to the through cavity 11 of the joint body 1 through the pipeline, so that the pressure acts on both ends of the valve core 2. The valve core 2 moves to the end with smaller pressure under the action of the combined force, thereby controlling the communication between the oil ports and realizing the pressure selection function. Figure 1 , where port A is connected to the working port of one actuator, port B is connected to the working port of another actuator, and port C is connected to the remote control port of the remote relief valve. When the pressure at port A is greater than the pressure at port B, the direction of the combined force of the hydraulic pressure on the valve core 2 is to the right, and the valve core 2 moves to the right until it is blocked by the sealing end cover 4 on one side. At this time, port A communicates with port C, and the high pressure at port A is transmitted to port C. When the pressure at port B is greater than the pressure at port A, the direction of the combined force of the hydraulic pressure on the valve core 2 is to the left, and the valve core 2 moves to the left until it is blocked by the sealing end cover 4 on the other side. At this time, port B communicates with port C, and the high pressure at port B is transmitted to port C.

[0050] Compared with the prior art, this three-way connector with pressure selection function is used in the electro-hydraulic steering transmission system of the chassis of electric vehicles, which reduces the number of components and pipelines in the system, simplifies the layout of the system pipelines, and meets the requirements of integrated design. The device can realize the pressure selection function through the setting of the sliding connection between the valve core 2 and the connector body 1, which is more convenient to use; the structure is simple, and a small pressure difference can drive the valve core 2 to move, and the flow requirement of the system is extremely low, and the manufacturing and use costs are lower. The utility model solves the problems existing in the current technology that the circuit cannot be selected independently according to the different pressures in the pipeline, resulting in inconvenience in use; the number of original parts of the control pipeline is too large, and the use cost is high; it cannot meet the long-term use in low temperature environment. The effect is significant and suitable for wide promotion.

[0051] As another embodiment of the present invention, the structure of this three-way joint with pressure selection function is basically the same as that in the above embodiment, except that a sealing boss 41 is provided on the side of the sealing end cover 4 close to the valve core 2, and the sealing boss 41 is used to abut against the sealing gasket 3. The provision of the sealing boss 41 forms a surface contact seal between the sealing end cover 4 and the sealing gasket 3. This structure not only ensures the effectiveness of the seal, but also greatly reduces the damage of the sealing boss 41 to the surface of the sealing gasket 3 during long-term use, which can greatly increase the service life of the sealing gasket 3.

[0052] In this embodiment, a plurality of mounting holes 42 are provided in the circumference of one side of the sealing end cover 4 away from the valve core 2, and the mounting holes 42 are engaged with the mounting wrench, so that the sealing end cover 4 can be driven to rotate by the mounting wrench. The axial length of the valve core 2 is greater than the diameter of the water outlet cavity 12; the spacing between the two sealing end covers 4 is greater than or equal to twice the diameter of the water outlet cavity 12 and less than three times the diameter of the water outlet cavity 12. This structure ensures that sufficient space is reserved for liquid to pass through, and prevents liquids at both ends of the valve core 2 from entering the water outlet cavity 12 at the same time, thereby affecting each other.

[0053] As another embodiment of the utility model, the structure of this three-way connector with pressure selection function is basically the same as the structure in the above embodiment, the difference is that the through cavity 11 includes a sliding portion 111, a limiting portion 112, and an external connecting portion 113, wherein the sliding portion 111 is communicated with the water outlet cavity 12, and the valve core 2 is arranged in the sliding portion 111; the limiting portion 112 is communicated with the sliding portion 111, the limiting portion 112 is connected to the sealing end cover 4, and corresponds to the sealing end cover 4 one by one, the limiting portion 112 is provided with an internal thread, and the sealing member is arranged in the limiting portion 112; the external connecting portion 113 is arranged on a side of the limiting portion 112 away from the sliding portion 111, and is communicated with the limiting portion 112, the external connecting portion 113 corresponds to the limiting portion 112 one by one, the diameter of the limiting portion 112 is larger than the diameter of the sliding portion 111, and smaller than the diameter of the external connecting portion 113, and the length of the sealing end cover 4 is smaller than the length of the limiting portion 112. The water outlet cavity 12 is disposed vertically through the cavity 11 , and the two sealing end covers 4 are symmetrically disposed on both sides of the water outlet cavity 12 .

[0054] Please also read Figures 1 to 9 As another embodiment of the present invention, the structure of the three-way joint with pressure selection function is basically the same as that in the above embodiment, except that the device further includes a display assembly 5, which includes an indicator disk 51, a pointer 52, a first rotating shaft 53, a speed change assembly 54, a second rotating shaft 55, and a traction assembly 56, wherein the indicator disk 51 is connected to the joint body 1, and a number is provided on the indicator disk 51; the pointer 52 is used to cooperate with the indicator disk 51 to display the pressure value; one end of the first rotating shaft 53 is connected to the pointer 52, and the other end passes through the indicator disk 51 and rotates with the joint body 1. The speed change assembly 54 is connected to the first rotating shaft 53, and the joint body 1 is provided with a housing chamber 13 for accommodating the speed change assembly 54; the second rotating shaft 55 is connected to the speed change assembly 54 and is rotatably connected to the joint body 1; one end of the traction assembly 56 is connected to the second rotating shaft 55, and the other end is connected to the valve core 2, the valve core 2 drives the traction assembly 56 and the second rotating shaft 55 to rotate, the second rotating shaft 55 drives the first rotating shaft 53 to rotate through the speed change assembly 54, and the first rotating shaft 53 drives the pointer 52 to rotate and align with the corresponding indication on the indicator disk 51, so as to observe the movement of the valve core 2 in the sliding part 111.

[0055] As another embodiment of the utility model, the structure of the three-way joint with pressure selection function is basically the same as that in the above embodiment, except that the traction assembly 56 includes a slider 561, a traction rod 562, and a traction cylinder 563, wherein the slider 561 is slidably connected to the valve core 2, and the valve core 2 is provided with a slide groove 22 adapted to the slider 561; the traction rod 562 is rotatably connected to the slider 561; one end of the traction cylinder 563 is connected to the second rotating shaft 55, and the other end is slidably connected to the traction rod 562, and the traction cylinder 563 is provided with a contraction cavity for accommodating the traction rod 562, and the joint body 1 is provided with a driving groove 14, and the traction cylinder 563, the traction rod 562 and the second rotating shaft 55 are all arranged in the driving groove 14. The driving groove 14 can be a triangular prism-shaped groove structure, which is convenient for the traction rod 562 to swing freely in the driving groove 14.

[0056] As another embodiment of the present utility model, the structure of the three-way joint with pressure selection function is basically the same as the structure in the above embodiment, except that the speed change assembly 54 includes a first bevel gear 541, a second bevel gear 542, a third bevel gear 543, a main gear 544 and a slave gear 545, the first bevel gear 541 is fixedly connected to the second rotating shaft 55, and the second rotating shaft 55 drives the first bevel gear 541 to rotate; the second bevel gear 542 is meshed with the first bevel gear 541 and the third bevel gear 543 at the same time, the first bevel gear 541 is vertically arranged with the third bevel gear 543, the second bevel gear 542 is vertically arranged with the first bevel gear 541 and the third bevel gear 543 at the same time, and the first bevel gear 541 drives the third bevel gear 543 to rotate through the second bevel gear 542; the main gear 544 is coaxially arranged with the third bevel gear 543 and meshed with the slave gear 545, and is used to drive the slave gear 545 to rotate; the slave gear 545 is fixedly connected to the first rotating shaft 53, and is used to drive the pointer 52 to rotate through the first rotating shaft 53. The second bevel gear 542, the third bevel gear 543, and the main gear 544 are all rotatably connected to the joint body 1. It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0057] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced. The contents not described in detail in the embodiments of the utility model belong to the prior art known to professional and technical personnel in this field.

[0058] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A three-way connector with pressure selection function, characterized in that: include: A joint body (1) comprises a through cavity (11) and a water outlet cavity (12) connected to the through cavity (11); A valve core (2) is disposed in the through cavity (11) and is slidably connected to the joint body (1); A sealing gasket (3) connected to the valve core (2), wherein two sealing gaskets (3) are provided and are respectively arranged on both sides of the valve core (2); A sealing end cover (4) is connected to the joint body (1); the sealing end cover (4) corresponds to the sealing gasket (3) in a one-to-one manner and is used to abut against the sealing gasket (3).

2. A three-way connector with pressure selection function according to claim 1, characterized in that: A sealing boss (41) is provided on one side of the sealing end cover (4) close to the valve core (2), and the sealing boss (41) is used to abut against the sealing gasket (3).

3. A three-way connector with pressure selection function according to claim 1, characterized in that: The valve core (2) is provided with a mounting groove (21) for mounting the sealing gasket (3), and the mounting groove (21) corresponds to the sealing gasket (3) one by one.

4. A three-way connector with pressure selection function according to claim 1, characterized in that: The axial length of the valve core (2) is greater than the diameter of the water outlet chamber (12); the spacing between the two sealing end covers (4) is greater than or equal to twice the diameter of the water outlet chamber (12) and less than three times the diameter of the water outlet chamber (12).

5. The three-way connector with pressure selection function according to claim 1, characterized in that: The through cavity (11) comprises: A sliding portion (111) is communicated with the water outlet chamber (12), and the valve core (2) is arranged in the sliding portion (111); A limiting portion (112) is communicated with the sliding portion (111), and the limiting portion (112) is connected to the sealing end cover (4) and corresponds one-to-one with the sealing end cover (4); The external connection portion (113) is arranged on a side of the limiting portion (112) away from the sliding portion (111) and is connected to the limiting portion (112). The external connection portion (113) corresponds to the limiting portion (112) one-to-one. The diameter of the limiting portion (112) is larger than the diameter of the sliding portion (111) and smaller than the diameter of the external connection portion (113). The length of the sealing end cover (4) is smaller than the length of the limiting portion (112).

6. A three-way connector with pressure selection function according to claim 1, characterized in that: The water outlet cavity (12) is arranged perpendicular to the through cavity (11), and the two sealing end covers (4) are symmetrically arranged on both sides of the water outlet cavity (12).

7. A three-way connector with pressure selection function according to claim 1, characterized in that: The sealing end cover (4) is connected to the joint body (1) via threads; or / and a plurality of mounting holes (42) are circumferentially arranged on one side of the sealing end cover (4) away from the valve core (2).

8. The three-way connector with pressure selection function according to claim 1, characterized in that: It also includes a display component (5), the display component (5) including: An indicator plate (51) connected to the joint body (1), wherein an indicator number is provided on the indicator plate (51); A pointer (52) for cooperating with the indicator plate (51) to display a pressure value; A first rotating shaft (53), one end of which is connected to the pointer (52), and the other end of which passes through the indicator plate (51) and is rotatably connected to the joint body (1); A speed change assembly (54) connected to the first rotating shaft (53), and a receiving cavity (13) for receiving the speed change assembly (54) is provided on the joint body (1); A second rotating shaft (55) connected to the speed change assembly (54) and rotatably connected to the joint body (1); A traction assembly (56) has one end connected to the second rotating shaft (55) and the other end connected to the valve core (2), and the valve core (2) drives the traction assembly (56) and the second rotating shaft (55) to rotate.

9. A three-way connector with pressure selection function according to claim 8, characterized in that: The traction assembly (56) comprises: A slider (561) is slidably connected to the valve core (2), and a slide groove (22) adapted to the slider (561) is provided on the valve core (2); A traction rod (562) rotatably connected to the slider (561); A traction cylinder (563) has one end connected to the second rotating shaft (55) and the other end slidably connected to the traction rod (562). The traction cylinder (563) is provided with a contraction cavity for accommodating the traction rod (562). The joint body (1) is provided with a driving groove (14). The traction cylinder (563), the traction rod (562) and the second rotating shaft (55) are all arranged in the driving groove (14).

10. A three-way connector with pressure selection function according to any one of claims 1 to 9, characterized in that: The material of the sealing gasket (3) is nylon; or / and a sealing member is provided between the sealing end cover (4) and the joint body (1), and the material of the sealing member is nylon.

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