Pressure controller for vehicle

Abstract

The utility model relates to the technical field of pressure controllers, in particular to a vehicle pressure controller which comprises a shell, an integrated electrical plug and a proportion electromagnet are installed on the shell, an installation groove is formed in one side of the shell, a back plate is arranged on the opening side of the installation groove, and a circuit board is connected into the installation groove through bolts. One side of the circuit board is provided with an input terminal and an output terminal, the integrated electrical plug is fixedly connected with a first connecting curved needle matched with the corresponding input terminal, and the proportion electromagnet is fixedly connected with a second connecting curved needle matched with the corresponding output terminal. According to the utility model, a direct insertion type wireless harness mode is adopted, so that the problem that the harness falls off due to infirm welding is avoided, and the pressure controller has the effects of high assembly efficiency and strong shock resistance; and the heat conduction pad and the cooling fins and the plurality of heat dissipation bulges on the back plate are matched, so that the cooling effect of the circuit board is realized, and the service lives of the circuit board and the pressure controller are further ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of pressure controllers, in particular to a vehicle pressure controller. Background Art

[0002] As a highly integrated mechatronics product, the pressure controller represents the development direction of fluid control technology and is widely used in factory automation and vehicle control. With the development of commercial vehicle technology, the application of pressure controllers is becoming more and more extensive, covering vehicle powertrain, chassis control, etc.

[0003] However, the conventional wiring harness is usually used to connect the internal circuit board and the proportional electromagnet of the existing common vehicle pressure controller. During the production process, the assembly efficiency is low, and the welding of the wiring harness connection is prone to be loose, which causes the wiring harness to shake and fall off when the vehicle is driving on a bumpy road, resulting in poor anti-seismic performance. In addition, the circuit board cannot be cooled during operation, resulting in a short service life.

[0004] In view of the above technical defects, a solution is now proposed. Utility Model Content

[0005] The purpose of the utility model is to provide a vehicle pressure controller to solve the above-mentioned technical defects. The utility model adopts a plug-in wireless harness to connect the integrated electrical plug and the proportional electromagnet to the circuit board to avoid the problem of loose welding of the wiring harness causing it to fall off. With the use of a rubber sealing ring, the pressure controller has the effects of high assembly efficiency and strong shock resistance; and with the thermal pad and the cooling fins and multiple heat dissipation protrusions on the back plate, the cooling effect of the circuit board is achieved, further ensuring the service life of the circuit board and the pressure controller.

[0006] This is achieved through the following technical solutions:

[0007] A vehicle pressure controller comprises a shell, on which an integrated electrical plug and a proportional electromagnet are installed, and a dustproof exhaust cap is arranged at the exhaust port of the shell, a limit ring is fixedly connected to the inner side wall of the dustproof exhaust cap, a mounting groove is opened on one side of the shell, and a back plate is arranged on the open side of the mounting groove, and clamping plates engaged with the shell are symmetrically fixedly connected on both sides of the back plate, a circuit board is bolted in the mounting groove, and an input terminal and an output terminal are installed on one side of the circuit board, a connecting bent pin 1 matched with the corresponding input terminal is fixedly connected to the integrated electrical plug, a connecting bent pin 2 matched with the corresponding output terminal is fixedly connected to the proportional electromagnet, and a pressure sensor is arranged in the output port of the shell.

[0008] Preferably, a first rubber sealing ring is provided between the integrated electrical plug and the housing, a second rubber sealing ring is provided between the proportional electromagnet and the housing, and cavities are provided inside the first rubber sealing ring and the second rubber sealing ring.

[0009] Preferably, a thermal pad is provided between the circuit board and the back plate, a sealing pad is provided between the back plate and the housing, and rubber bumps for contacting the thermal pad with the circuit board are fixedly connected to each inner corner of the sealing pad.

[0010] Preferably, a plurality of heat dissipation protrusions in contact with the thermally conductive pad are fixedly connected to one side of the back plate close to the sealing pad, and a cooling fin is fixedly installed inside the back plate.

[0011] Preferably, a mounting column is fixedly connected inside the exhaust port, the dust-proof exhaust cap is connected to the free end of the mounting column by a fixing screw, and a plurality of air outlets are opened through the dust-proof exhaust cap, a sealing exhaust gasket is abutted between the mounting column and the dust-proof exhaust cap, and the outer ring end of the sealing exhaust gasket abuts against the end of the exhaust port.

[0012] The beneficial effects of the utility model are as follows:

[0013] (1) The utility model replaces the wiring harness connection in the traditional solution by setting a connection bend pin 1 to cooperate with the input terminal and a connection bend 2 to cooperate with the output terminal, so that the integrated electrical plug and the proportional electromagnet are directly connected to the circuit board, thereby improving the assembly efficiency and avoiding the problem that the pressure controller cannot be used due to loose welding causing the wiring harness connection to fall off during the vibration of the vehicle during driving, thereby improving the anti-vibration effect during use. At the same time, the use of a rubber sealing ring can not only improve the sealing of the connection between them, but also avoid the relative movement of the connection bend pin and the terminal when they are connected, which can cause the problem of mutual wear between the two.

[0014] (2) The utility model can guide the heat generated by the circuit board when it is working to the back plate by arranging a thermal pad on one side of the circuit board, and cooperate with the cooling plate and multiple heat dissipation protrusions on the back plate to achieve a cooling effect, thereby ensuring the service life of the circuit board and the pressure controller;

[0015] (3) The utility model cooperates with a dustproof exhaust cap and a sealing exhaust gasket in the exhaust port, so that when exhausting, the outer ring end of the sealing exhaust gasket is automatically pushed to separate from the exhaust port end, thereby successfully completing the exhaust operation. When not exhausting, the outer ring end of the sealing exhaust gasket will fit tightly against the end of the exhaust port, achieving a one-way seal, thereby further ensuring the IP rating of the pressure controller. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The utility model is further described below in conjunction with the accompanying drawings;

[0017] Figure 1 It is a structural schematic diagram of the utility model;

[0018] Figure 2 It is a partial sectional view of the front side of the utility model;

[0019] Figure 3 It is a partial cross-sectional view of the right side of the utility model;

[0020] Figure 4 This utility model Figure 2 A partial enlarged view of the middle A;

[0021] Figure 5 It is a schematic diagram of the connection between the integrated electrical plug and the input terminal of the utility model;

[0022] Figure 6 It is a connection diagram of the proportional electromagnet and the output terminal of the utility model.

[0023] Legend:

[0024] 1. Shell; 2. Integrated electrical plug; 3. Proportional solenoid; 4. Dust-proof exhaust cap; 5. Back plate; 6. Card board; 7. Circuit board; 8. Input terminal; 9. Output terminal; 10. Connecting bent pin 1; 11. Connecting bent pin 2; 12. Pressure sensor; 13. Rubber sealing ring 1; 14. Rubber sealing ring 2; 15. Thermal pad; 16. Sealing pad; 17. Rubber bump; 18. Heat dissipation protrusion; 19. Cooling fin; 20. Mounting column; 21. Fixing screw; 22. Air outlet; 23. Sealing exhaust pad; 24. Limiting ring. DETAILED DESCRIPTION

[0025] 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.

[0026] The existing pressure controller uses traditional wiring harness connection, which has slow assembly efficiency, poor seismic performance, and poor heat dissipation of the circuit board. The following solutions can be used to solve the problem:

[0027] See also Figure 1 - Figure 6As shown, in this embodiment, a vehicle pressure controller includes a housing 1, on which an integrated electrical plug 2 and a proportional electromagnet 3 are installed. The proportional electromagnet 3 is used to adjust the pressure of the housing 1 input port. The integrated electrical plug 2 is used to connect the circuit board 7 with the external wiring harness to realize the control of the proportional electromagnet 3. A dust-proof exhaust cap 4 is provided at the exhaust port of the housing 1, which is used to one-way seal the exhaust port of the housing 1 when it is no longer exhausted, so as to prevent external dust from entering the interior of the housing 1 and improve the IP protection level of the housing 1. A mounting groove is provided on one side of the housing 1 for the circuit board 7. The installation of the housing 1 is carried out, and a through slot for the integrated electrical plug 2 and the connecting end of the proportional electromagnet 3 to pass through is provided between the installation slot and the outer side of the housing 1, so that the two are electrically connected to the circuit board 7, and a back plate 5 is provided on the opening side of the installation slot, which is used to block the opening side of the installation slot to improve the protection of the internal circuit board 7. The two sides of the back plate 5 are symmetrically fixedly connected with a card plate 6 engaged with the housing 1, so that the back plate 5 can be quickly disassembled and assembled, and the circuit board 7 can be easily repaired later, and one side of the back plate 5 is used as the installation surface between the housing 1 and the vehicle, so as to further improve the stable connection between the back plate 5 and the housing 1;

[0028] A circuit board 7 is bolted in the mounting groove, and an input terminal 8 and an output terminal 9 are installed on one side of the circuit board 7. A connecting bent pin 10 matched with the corresponding input terminal 8 is fixedly connected to the integrated electrical plug 2. The set connecting bent pin 10 cooperates with the input terminal 8 to replace the wiring harness connection in the traditional solution, so that the integrated electrical plug 2 is directly connected to the circuit board 7, thereby improving the assembly efficiency between the two and avoiding the problem of the wiring harness connection falling off due to loose welding. A connecting bent pin 2 11 matched with the corresponding output terminal 9 is fixedly connected to the proportional electromagnet 3. The set connecting bent pin 2 11 cooperates with the output terminal 9 to replace the wiring harness connection in the traditional solution, thereby directly connecting the proportional electromagnet 3 to the circuit board 7, thereby improving the assembly efficiency between the two and avoiding the problem of the wiring harness connection falling off due to loose welding. A pressure sensor 12 is arranged in the output port of the shell 1 for detecting the actual output pressure of the output port of the shell 1, and controlling the proportional electromagnet 3 through an external controller to achieve the purpose of stabilizing the output pressure.

[0029] A rubber sealing ring 13 is provided between the integrated electrical plug 2 and the housing 1. The use of the rubber sealing ring 13 can improve the connection sealing between the integrated electrical plug 2 and the housing 1, and can also avoid the problem of relative movement and mutual wear between the connecting bent pin 10 and the input terminal 8 due to external vibration when the two are connected. A rubber sealing ring 2 14 is provided between the proportional electromagnet 3 and the housing 1. The use of the rubber sealing ring 2 14 can improve the connection sealing between the proportional electromagnet 3 and the housing 1, and can also avoid the problem of relative movement and mutual wear between the connecting bent pin 2 11 and the output terminal 9 due to external vibration when the two are connected. The rubber sealing ring 13 and the rubber sealing ring 2 14 are both provided with cavities inside. The provided cavities provide a certain buffer space between the integrated electrical plug 2 and the proportional electromagnet 3 and the housing 1, thereby improving the anti-seismic effect of the pressure controller.

[0030] A thermal pad 15 is provided between the circuit board 7 and the back plate 5. By providing the thermal pad 15 on one side of the circuit board 7, the heat generated by the circuit board 7 during operation can be guided to the back plate 5. A sealing pad 16 is provided between the back plate 5 and the shell 1 to increase the sealing of the connection between the back plate 5 and the shell 1, and rubber bumps 17 for contacting the thermal pad 15 with the circuit board 7 are fixedly connected to each inner corner of the sealing pad 16, thereby improving the fitting effect between the thermal pad 15 and the circuit board 7, thereby improving the cooling effect on the circuit board 7.

[0031] A plurality of heat dissipation protrusions 18 in contact with the thermal pad 15 are fixedly connected to one side of the back plate 5 close to the sealing pad 16, and a cooling fin 19 is fixedly installed inside the back plate 5. The thermal pad 15 cooperates with the cooling fin 19 and the plurality of heat dissipation protrusions 18 on the back plate 5 to achieve a cooling effect, thereby ensuring the service life of the circuit board 7 and the pressure controller.

[0032] A mounting column 20 is fixedly connected in the exhaust port, and a dust-proof exhaust cap 4 is connected to the free end of the mounting column 20 by a fixing screw 21. The dust-proof exhaust cap 4 cooperates with the mounting column 20 and the fixing screw 21 to fix the sealing exhaust gasket 23, so that its outer ring end contacts the exhaust port end, and a plurality of air outlets 22 are opened through the dust-proof exhaust cap 4. A sealing exhaust gasket 23 is abutted between the mounting column 20 and the dust-proof exhaust cap 4, and the outer ring end of the sealing exhaust gasket 23 abuts against the end of the exhaust port. By cooperating with the dust-proof exhaust cap 4 and the sealing exhaust gasket 23 in the exhaust port, when exhausting, the outer ring end of the sealing exhaust gasket 23 is automatically pushed to separate from the exhaust port end, and the exhaust operation is successfully completed. When not exhausting, the outer ring end of the sealing exhaust gasket 23 will fit tightly against the end of the exhaust port, realizing one-way sealing, thereby further ensuring the IP rating of the pressure controller.

[0033] A limit ring 24 is fixedly connected to the inner wall of the dust-proof exhaust cap 4. During the exhaust process, the distance between the outer ring end of the sealing exhaust gasket 23 and the exhaust port end is limited to avoid the sealing exhaust gasket 23 being difficult to reset when exhaust is not required, resulting in poor dust-proof effect.

[0034] The working process and principle of the utility model are as follows:

[0035] In the production process of the utility model, the integrated electrical plug 2 is quickly connected to the circuit board 7 by connecting the bent pin 10 and the input terminal 8, and the proportional electromagnet 3 is quickly connected to the circuit board 7 by connecting the bent pin 2 and the output terminal 9, thereby avoiding the problem of welding the connection points of the traditional wiring harness, which leads to low assembly efficiency, and the problem of poor anti-seismic effect caused by loose welding during welding.

[0036] During use, the actual output pressure is detected by the pressure sensor 12 in the output port of the housing 1. When the output pressure is too high, the proportional electromagnet 3 is controlled by the external controller to reduce the input pressure, and the excess gas is discharged through the exhaust port of the housing 1. When discharged, the outer ring end of the sealing exhaust pad 23 is automatically pushed to deform and separate from the exhaust port end, and cooperate with the outlet 22 on the dust-proof exhaust cap 4. After the exhaust operation is completed, the outer ring end of the sealing exhaust pad 23 is reset and tightly fitted to the end of the exhaust port to achieve one-way sealing. When the output pressure is too low, the proportional electromagnet 3 is controlled by the external controller to increase the input pressure to achieve the purpose of stabilizing the output pressure;

[0037] During the operation of the circuit board 7 , the heat generated is guided to the back plate 5 through the thermal pad 15 , and the circuit board 7 is cooled and dissipated in cooperation with the cooling fins 19 and the plurality of heat dissipation protrusions 18 on the back plate 5 .

[0038] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A vehicle pressure controller, comprising a housing (1), characterized in that: An integrated electrical plug (2) and a proportional electromagnet (3) are installed on the shell (1), and a dustproof exhaust cap (4) is arranged at the exhaust port of the shell (1), and a limit ring (24) is fixedly connected to the inner side wall of the dustproof exhaust cap (4). A mounting groove is provided on one side of the shell (1), and a back plate (5) is provided on the open side of the mounting groove. A clamping plate (6) engaged with the shell (1) is symmetrically fixedly connected on both sides of the back plate (5). A circuit board (7) is bolted in the mounting groove, and an input terminal (8) and an output terminal (9) are installed on one side of the circuit board (7). A connecting bent pin 1 (10) matched with the corresponding input terminal (8) is fixedly connected to the integrated electrical plug (2), and a connecting bent pin 2 (11) matched with the corresponding output terminal (9) is fixedly connected to the proportional electromagnet (3). A pressure sensor (12) is arranged in the output port of the shell (1).

2. A vehicle pressure controller according to claim 1, characterized in that: A rubber sealing ring 1 (13) is provided between the integrated electrical plug (2) and the housing (1), a rubber sealing ring 2 (14) is provided between the proportional electromagnet (3) and the housing (1), and cavities are provided inside the rubber sealing ring 1 (13) and the rubber sealing ring 2 (14).

3. A vehicle pressure controller according to claim 1, characterized in that: A heat-conducting pad (15) is provided between the circuit board (7) and the back plate (5), a sealing pad (16) is provided between the back plate (5) and the housing (1), and rubber bumps (17) for contacting the heat-conducting pad (15) with the circuit board (7) are fixedly connected to each inner corner of the sealing pad (16).

4. A vehicle pressure controller according to claim 3, characterized in that: A plurality of heat dissipation protrusions (18) in contact with the thermal pad (15) are fixedly connected to one side of the back plate (5) close to the sealing pad (16), and a cooling fin (19) is fixedly installed inside the back plate (5).

5. A vehicle pressure controller according to claim 1, characterized in that: A mounting column (20) is fixedly connected inside the exhaust port, the dust-proof exhaust cap (4) is connected to the free end of the mounting column (20) via a fixing screw (21), and a plurality of air outlets (22) are formed through the dust-proof exhaust cap (4), a sealing exhaust pad (23) is abutted between the mounting column (20) and the dust-proof exhaust cap (4), and the outer ring end of the sealing exhaust pad (23) abuts against the end of the exhaust port.

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