Electromagnetic valve and hydraulic control system thereof

Abstract

The utility model provides an electromagnetic valve and a hydraulic control system thereof, the electromagnetic valve is electrically connected with a circuit board through a PIN needle, an auxiliary part is added on a coil framework of the electromagnetic valve, after the electromagnetic valve is assembled, when the electromagnetic valve is connected with the circuit board, the part, exposed out of the circuit board, of the auxiliary part is firstly subjected to hot melting, and the electromagnetic valve is fixed with the circuit board; and then tin soldering is carried out on the PIN needle. According to the scheme, vibration generated in the transportation, assembly and use processes of the electromagnetic valve can be shared by the auxiliary part and the welding spot after hot melting riveting, the risk of vibration failure of the PIN welding spot is reduced, and therefore electric connection between the PIN and a circuit board is effectively guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of solenoid valves, in particular to a solenoid valve and a hydraulic control system thereof. Background Art

[0002] The solenoid valve is a basic automation component used to control the direction of the fluid and is an actuator. It is usually used in mechanical control and industrial valves to control the direction of the medium, thereby achieving control of the valve switch.

[0003] When a traditional solenoid valve is connected to a circuit board via a PIN pin, soldering is usually performed directly. This solution causes the vibration generated during the transportation, assembly and use of the solenoid valve to be concentrated on the soldering points of the circuit board, causing the soldering points to pull off and fail. Utility Model Content

[0004] The utility model solves the problem that the welding point of the PIN needle of the solenoid valve coil fails due to the vibration generated during the transportation, assembly and use process.

[0005] In order to solve the above problems, the utility model provides a solenoid valve, comprising:

[0006] PIN needle, the PIN needle is used to be electrically connected to the circuit board; the solenoid valve coil skeleton, the solenoid valve coil skeleton is provided with a PIN needle mounting part, and the PIN needle is connected to the PIN needle mounting part; the auxiliary part, there are multiple auxiliary parts, and the auxiliary parts are arranged on the solenoid valve coil skeleton; wherein the auxiliary parts are hot-melt riveted to the circuit board, and the auxiliary parts are used for auxiliary installation and fixation of the PIN needle.

[0007] Compared with the prior art, the technical effect achieved by adopting this technical solution is as follows: the vibration generated by the solenoid valve during transportation, assembly and use is shared by the columns and solder joints after hot-melt riveting, reducing the risk of vibration failure of the PIN pin solder joints, thereby effectively ensuring the electrical connection between the PIN pin and the circuit board.

[0008] Furthermore, the auxiliary part includes: a hot melt column, which is used for hot melt riveting with the circuit board; an abutment column, which is respectively connected to the hot melt column and the solenoid valve coil frame. When the hot melt column is hot melt riveted with the circuit board, the abutment column and the circuit board abut against each other.

[0009] Compared with the prior art, the technical effect achieved by adopting this technical solution is as follows: the auxiliary part can be integrally formed with the solenoid valve coil frame, the hot melt riveting connection process is not affected by the coil frame material, and the abutment column can make the hot melt riveting part connection more stable.

[0010] Furthermore, the circuit board includes: a hot melt matching hole, and the hot melt matching hole is used for hot melt connection with the hot melt column.

[0011] Compared with the prior art, the technical effects achieved by adopting this technical solution are as follows: The hot-melt fitting holes facilitate the positioning of the hot-melt posts during hot-melt riveting.

[0012] Further, the PIN pin mounting portion is a convex post, and a mounting hole is provided on the convex post for mounting the PIN pin.

[0013] Compared with the prior art, the technical effects achieved by adopting this technical solution are as follows: It is convenient for mounting the PIN pin.

[0014] Further, the solenoid valve coil skeleton includes: an end cover, and the PIN pin mounting portion and the auxiliary portion are adjacently arranged on the end cover.

[0015] Compared with the prior art, the technical effects achieved by adopting this technical solution are as follows: The PIN pin mounting portion and the auxiliary portion are arranged on the end cover together, which can effectively ensure the electrical connection of the PIN pin.

[0016] Further, the solenoid valve is provided with a valve sleeve, and the valve sleeve is assembled on the solenoid valve coil skeleton for protecting the coil.

[0017] Compared with the prior art, the technical effects achieved by adopting this technical solution are as follows: The valve sleeve can not only play a sealing role, but also reduce the impact and vibration of the solenoid valve during operation.

[0018] Further, the valve sleeve is provided with a positioning hole, and the solenoid valve coil skeleton is provided with a positioning boss, and the positioning hole and the positioning boss cooperate with each other for positioning the valve sleeve.

[0019] Compared with the prior art, the technical effects achieved by adopting this technical solution are as follows: The positioning hole and the positioning boss facilitate the installation and fixation of the valve sleeve.

[0020] Further, the valve sleeve is provided with a through hole for the PIN pin mounting portion, and the through hole for the PIN pin mounting portion is for the PIN pin mounting portion to pass through.

[0021] Compared with the prior art, the technical effects achieved by adopting this technical solution are as follows: The through hole for the PIN pin mounting portion enables the PIN pin to be connected to the circuit board.

[0022] Further, the valve sleeve is provided with a through hole for the auxiliary portion, and the through hole for the auxiliary portion is for the auxiliary portion to pass through.

[0023] Compared with the prior art, the technical effects achieved by adopting this technical solution are as follows: The through hole for the auxiliary portion enables the auxiliary portion to be connected to the circuit board.

[0024] Compared with the prior art, the advantages of the solenoid valve of the present utility model are that the vibration generated during the transportation, assembly and use of the solenoid valve is shared by the posts and solder joints after hot-melt riveting, reducing the risk of vibration failure of the PIN pin solder joints, thereby effectively ensuring the electrical connection between the PIN pin and the circuit board. Description of the Drawings

[0025] The drawings forming a part of the present utility model are used to provide a further understanding of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation to the present utility model. In the drawings:

[0026] Figure 1 Schematic diagram of the solenoid valve assembly structure according to an embodiment of the present utility model;

[0027] Figure 2 Schematic diagram of the assembly structure of the solenoid valve and the circuit board according to an embodiment of the present utility model;

[0028] Figure 3 Schematic diagram of the solenoid valve coil bobbin structure according to an embodiment of the present utility model;

[0029] Figure 4 Schematic diagram of the first structure of the solenoid valve valve sleeve according to an embodiment of the present utility model;

[0030] Figure 5 Schematic diagram of the second structure of the solenoid valve valve sleeve according to an embodiment of the present utility model;

[0031] Figure 6 Schematic diagram of the circuit board according to an embodiment of the present utility model.

[0032] Description of the reference numerals:

[0033] 1 - Solenoid valve; 2 - Circuit board;

[0034] 10 - Solenoid valve coil bobbin; 11 - Valve sleeve;

[0035] 101 - Auxiliary part; 102 - PIN pin mounting part; 103 - Positioning boss; 104 - End cap; 111 - Auxiliary part through hole; 112 - PIN pin mounting part through hole; 113 - Positioning hole; 1011 - Hot melt post; 1012 - Abutting post;

[0036] 201 - Hot melt fitting hole; 202 - PIN pin fitting hole. Detailed Description of the Embodiments

[0037] In order to make the above - mentioned objects, features and advantages of the present utility model more obvious and understandable, the following detailed description of the specific embodiments of the present utility model will be given with reference to the drawings.

[0038] The following refers to Figures 1 to 6 Describe the technical solutions of some embodiments of the present utility model.

[0039] As Figure 1 、 Figure 2 And Figure 3As shown in the figure, this embodiment provides a solenoid valve 1, which includes: a PIN pin for electrically connecting with a circuit board 2; a solenoid valve coil skeleton 10, on which a PIN pin mounting portion 102 is provided, and the PIN pin is connected to the PIN pin mounting portion 102; and a plurality of auxiliary portions 101 provided on the solenoid valve coil skeleton 10. Among them, the auxiliary portions 101 are hot melt riveted to the circuit board 2 and are used for auxiliary installation and fixation of the PIN pins.

[0040] When the solenoid valve 1 is assembled with the circuit board 2, the hot melt posts 1011 of the auxiliary portion 101 can be first hot melt riveted to the circuit board 2, and then the circuit board 2 and the solenoid valve 1 are soldered and connected through the PIN pins, so as to share the vibration borne by the PIN pins during use, so as to effectively ensure the electrical connection of the PIN pins.

[0041] Specifically, as Figure 3 shown, the auxiliary portion 101 includes: a hot melt post 1011 and a abutting post 1012.

[0042] The auxiliary portion 101 can be processed with the solenoid valve coil skeleton 10 by injection molding in one piece, using thermoplastic materials such as nylon, PA, PP or ABS, which saves costs and is convenient for processing.

[0043] As Figure 2 and Figure 3 shown, the hot melt post 1011 is used for hot melt riveting with the circuit board 2.

[0044] At the same time, a hot melt mating hole 201 is provided on the circuit board 2 for mating with it.

[0045] For example, the hot melt post 1011 can adopt a cylindrical structure with a diameter slightly smaller than the auxiliary portion through hole 202. The cylindrical structure has a larger area under the same outer envelope size and stronger hot melt reliability. During assembly, the part of the hot melt post 1011 protruding from the circuit board 2 can be first hot melt riveted to strengthen the fixation.

[0046] For example, when the hot melt post 1011 is hot melt riveted to the circuit board 2, round head riveting can be used. Round head riveting has better riveting stability when the diameter of the riveting post is small. At the same time, the number of hot melt posts 1011 is multiple. For example, the number of hot melt posts 1011 is 2 or 4. Setting the hot melt posts 1011 to be multiple can effectively ensure the stability of the connection. The hot melt posts 1011 cooperate with the hot melt mating holes 201, the number of the hot melt mating holes 201 is the same as that of the hot melt posts 1011, and the number of the hot melt posts is the same as that of the PIN pin mounting portion 102.

[0047] As Figure 3As shown, against the column 1012, the against column 1012 is respectively connected to the hot melt column 1011 and the solenoid valve coil skeleton 10. When the hot melt column 1011 is hot melt riveted to the circuit board 2, the against column 1012 abuts against the circuit board 2.

[0048] The against column 1012 adopts a columnar structure with a diameter slightly larger than the through hole 202 of the auxiliary part. For example, a cylindrical structure with a diameter 5 mm larger than the through hole 202 of the auxiliary part is adopted to ensure the effectiveness of the abutment. At the same time, the against column 1012 can also be fixed by an interference fit with the through hole 202 of the auxiliary part. The against column can be partially inserted into the through hole 202 of the auxiliary part to play a fixing role.

[0049] As Figure 3 shown, the PIN needle mounting part 102 is arranged on the end cover 104 adjacent to the auxiliary part 101. The PIN needle mounting part 102 is a convex column or convex platform, and there is a mounting hole on the convex column, and the shape of the mounting hole matches the PIN needle.

[0050] As Figure 4 and Figure 5 shown, the solenoid valve 1 is provided with a valve sleeve 11, and the valve sleeve 11 is assembled on the solenoid valve coil skeleton 10 to protect the coil.

[0051] The valve sleeve 11 can not only play a sealing role, but also reduce the impact and vibration of the solenoid valve during operation.

[0052] Furthermore, the valve sleeve 11 is provided with a positioning hole 113, and the solenoid valve coil skeleton 10 is provided with a positioning boss 103, wherein the positioning hole 113 and the positioning boss 103 cooperate with each other for positioning the valve sleeve 11.

[0053] At the same time, the valve sleeve 11 is provided with a through hole 112 for the PIN needle mounting part, and the through hole 112 for the PIN needle mounting part is used for the PIN needle mounting part 102 to pass through.

[0054] And, the valve sleeve 11 is further provided with a through hole 111 for the auxiliary part, and the through hole 111 for the auxiliary part is used for the auxiliary part 101 to pass through.

[0055] As Figure 1 and Figure 2 shown, this embodiment provides a hydraulic control system, including a solenoid valve 1.

[0056] Furthermore, the hydraulic control system further includes: a circuit board 2. The solenoid valve 1 is connected to the circuit board 2 through PIN needles.

[0057] Although the present utility model is disclosed as above, the present utility model is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present utility model. Therefore, the protection scope of the present utility model should be subject to the scope defined by the claims.

Claims

1. A solenoid valve, characterized in that: include: A PIN needle, the PIN needle being used to be electrically connected to the circuit board (2); A solenoid valve coil skeleton (10), wherein a PIN needle mounting portion (102) and an end cover (104) are provided on the solenoid valve coil skeleton (10), wherein the PIN needle mounting portion (102) is a convex column, and the PIN needle is mounted on the convex column; Auxiliary parts (101), there are a plurality of auxiliary parts (101), and the auxiliary parts (101) are arranged on the solenoid valve coil skeleton (10); A valve sleeve, the valve sleeve being assembled on the solenoid valve coil frame (10), the valve sleeve (11) being provided with a positioning hole (113), the solenoid valve coil frame (10) being provided with a positioning boss (103), wherein the positioning hole (113) and the positioning boss (103) cooperate with each other and are used for positioning the valve sleeve (11); The valve sleeve (11) is provided with an auxiliary portion passing hole (111), wherein the auxiliary portion passing hole (111) is used for the auxiliary portion (101) to pass through; The auxiliary part (101) is hot-melt-riveted to the circuit board (2), and the auxiliary part (101) is used for auxiliary installation and fixation of the PIN needle.

2. The solenoid valve according to claim 1, characterized in that: The auxiliary part (101) comprises: A hot melt column (1011), the hot melt column (1011) being used for hot melt riveting with the circuit board (2); An abutment column (1012), the abutment column (1012) being connected to the hot melt column (1011) and the solenoid valve coil skeleton (10) respectively, and when the hot melt column (1011) and the circuit board (2) are hot-melt-riveted, the abutment column (1012) and the circuit board (2) abut against each other.

3. The solenoid valve according to claim 2, characterized in that: The circuit board (2) comprises: A hot melt matching hole (201), wherein the hot melt matching hole (201) is used for hot melt connection with the hot melt column (1011).

4. The solenoid valve according to claim 1, characterized in that: The boss is provided with a mounting hole, and the mounting hole is used for mounting the PIN needle.

5. The solenoid valve according to claim 1, characterized in that: The PIN needle mounting portion (102) and the auxiliary portion are arranged adjacent to each other on the end cover (104).

6. The solenoid valve according to claim 1, characterized in that: The valve sleeve (11) is provided with a PIN needle mounting portion passing hole (112), and the PIN needle mounting portion passing hole (112) is used for the PIN needle mounting portion (102) to pass through.

7. A hydraulic control system, characterized in that: It comprises the solenoid valve as described in any one of claims 1 to 6.

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