Electromagnetic valve assembly

Abstract

The utility model discloses an electromagnetic valve assembly which comprises a shell, a valve seat, a static iron core and a sleeve, and the shell is provided with the valve seat, the static iron core and the sleeve. The valve seat is provided with a working port; a movable iron core is arranged in the assembly space on the inner side of the sleeve, is in transmission connection with the valve core, and moves up and down to drive the valve core to be matched with the working port; a connecting hole is formed in the lower end of the sleeve, and the connecting hole is inserted into the connecting part of the static iron core; a sealing piece is arranged between the inner wall of the connecting hole and the connecting part; the electromagnetic valve has the advantages of being low in cost and easy to install, and relates to the technical field of electromagnetic valves.

Description

Technical Field

[0001] The utility model relates to the technical field of solenoid valves, and more precisely, to a solenoid valve assembly. Background Art

[0002] The solenoid valve is one of the essential components of automotive products, and its main function is to achieve the on-off function of pipelines. In the existing solenoid valve, a moving iron core is generally provided with a sleeve and a static iron core. A valve core is arranged in the assembly space inside the sleeve. The bottom of the sleeve is inserted on the static iron core through a connecting hole. Currently, laser welding is generally used to weld the bottom of the sleeve to the static iron core and achieve sealing, so as to prevent external substances from entering the assembly space through the connecting hole. However, the production cost using the above method is relatively high, the assembly is relatively complex, and the qualified rate of laser welding is lower compared with the sealing process of the sealing element. Content of the Utility Model

[0003] Aiming at the deficiencies and defects of the prior art, a solenoid valve assembly with lower cost and simple installation is provided.

[0004] A solenoid valve assembly includes:

[0005] A housing, on which a valve seat, a static iron core, and a sleeve are provided;

[0006] The valve seat is provided with a working port;

[0007] A moving iron core is arranged in the assembly space inside the sleeve. The moving iron core is in transmission connection with the valve core, and the up-and-down movement of the moving iron core drives the valve core to cooperate with the working port;

[0008] The lower end of the sleeve is provided with a connecting hole, and the connecting hole is inserted on the connecting part of the static iron core;

[0009] And a sealing element is arranged between the inner wall of the connecting hole and the connecting part.

[0010] After adopting the above structure, compared with the prior art, the solenoid valve assembly of the utility model has the following advantages:

[0011] The connecting hole at the bottom end of the sleeve is directly inserted on the connecting part of the static iron core, and a sealing element is arranged between the inner wall of the connecting hole and the connecting part to form a seal, so as to prevent external substances from entering the assembly space.

[0012] Compared with the current connection of the connecting hole to the static iron core by laser welding, it has the characteristics of simple installation, detachable, and convenient for maintenance and replacement;

[0013] In addition, a laser welding device does not need to be set on the production line, reducing the cost.

[0014] Preferably, the connection hole and the connection part are tightly combined to make the position of the sleeve stable and the device operate with high reliability.

[0015] As an improvement of the present utility model, the connection part includes a first convex column arranged at the upper end of the static iron core and a second convex column arranged on the first convex column;

[0016] The diameter of the second convex column is smaller than that of the first convex column;

[0017] The bottom end of the connection hole is sleeved on the outside of the first convex column;

[0018] The upper end of the second convex column extends into the assembly space and contacts the inner wall of the assembly space.

[0019] As an improvement of the present utility model, the sealing member is a sealing ring made of rubber material. The sealing ring is sleeved on the outside of the second convex column and abuts against the inner wall of the connection hole.

[0020] As an improvement of the present utility model, the inner side of the outer shell has a receiving cavity. The bottom side wall of the receiving cavity is provided with a thinning area that tapers radially outward. A convex platform is formed between the thinning area and the receiving cavity;

[0021] An outer edge that is in clearance fit with the thinning area is formed on the outer periphery of the static iron core. The static iron core enters from the bottom of the receiving cavity until the upper end of the outer edge abuts against the bottom end of the convex platform.

[0022] The upper end of the valve seat enters from the bottom of the receiving cavity and abuts against the lower end surface of the static iron core, and the outer periphery of the valve seat is connected to the outer shell.

[0023] As an improvement of the present utility model, a fixing surface is provided on the outer periphery of the upper end of the valve seat. The fixing surface is arranged such that the diameter gradually decreases from top to bottom to form an inclined fixing surface;

[0024] The bottom edge of the outer shell fixes the valve seat by pressing on the fixing surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a schematic structural diagram of the assembly of the sleeve and the static iron core of the present utility model.

[0026] Figure 2 is the Figure 1 schematic enlarged view of the structure at A in the present utility model.

[0027] Figure 3 is a schematic structural diagram of the sleeve of the present utility model.

[0028] Figure 4 is a schematic structural diagram of the static iron core and the valve seat of the present utility model.

[0029] Figure 5It is the assembly schematic diagram of the present utility model.

[0030] Figure 6 is the Figure 5 enlarged schematic diagram of the structure at position B in the present utility model.

[0031] Figure 7 is the schematic diagram of the housing structure of the present utility model.

[0032] As shown in the figure: 1. Housing; 1.1 Accommodating cavity; 1.11 Thinning area; 1.2 Boss; 1.3 Edge; 2. Valve seat; 2.1 Working port; 2.2 Fixed surface; 3. Static iron core; 3.1 Outer edge; 4. Sleeve; 4.1 Assembly space; 4.11 Moving iron core; 4.2 Connection hole; 4.21 Extension; 5. Connection part; 5.1 First convex column; 5.2 Second convex column; 6. Sealing element; 7. Valve core. Specific embodiments

[0033] The present utility model will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0034] Please refer to Figure 1-7 As shown, a solenoid valve assembly includes:

[0035] A housing 1, on which a valve seat 2, a static iron core 3, and a sleeve 4 are provided;

[0036] The valve seat 2 is provided with a working port 2.1;

[0037] An assembly space 4.1 inside the sleeve 4 is provided with a moving iron core 4.11, and the moving iron core 4.11 is in driving connection with the valve core 7. The up and down movement of the moving iron core 4.11 drives the valve core 7 to cooperate with the working port 2.1;

[0038] The lower end of the sleeve 4 is provided with a connection hole 4.2, and the connection hole 4.2 is inserted into the connection part 5 of the static iron core 3;

[0039] And a sealing element 6 is provided between the inner wall of the connection hole 4.2 and the connection part 5.

[0040] The connection hole 4.2 at the bottom end of the sleeve 4 is directly inserted into the connection part 5 of the static iron core 3, and a sealing element 6 is provided between the inner wall of the connection hole 4.2 and the connection part 5 to form a seal to prevent external substances from entering the assembly space 4.1.

[0041] Compared with the current connection of the connection hole 4.2 to the static iron core 3 by laser welding, it has the characteristics of simple installation, being detachable, and convenient for maintenance and replacement;

[0042] In addition, a laser welding device does not need to be set on the production line, reducing costs.

[0043] Preferably, the connection hole 4.2 is tightly combined with the connection part 5 to make the position of the sleeve 4 stable and the device operate with high reliability.

[0044] As an improvement of the present utility model, the connection part 5 includes a first convex column 5.1 provided at the upper end of the static iron core 3 and a second convex column 5.2 provided on the first convex column 5.1;

[0045] The diameter of the second convex column 5.2 is smaller than that of the first convex column 5.1;

[0046] The bottom end of the connection hole 4.2 is sleeved on the outside of the first convex column 5.1;

[0047] The upper end of the second convex column 5.2 extends into the assembly space 4.1 and contacts the inner wall of the assembly space 4.1.

[0048] After the above improvement, the first convex column 5.1 is sleeved at the bottom end of the connection hole 4.2, and the second convex column 5.2 is sleeved at the bottom end of the assembly space 4.1. Preferably, it is sleeved in a tightly combined manner;

[0049] There are multiple support and connection points between the sleeve 4 and the connection part 5, making the position of the sleeve 4 stable and the device operate with high reliability.

[0050] As an improvement of the present utility model, the sealing member 6 is a rubber sealing ring, and the sealing ring is sleeved on the outside of the second convex column 5.2 and abuts against the inner wall of the connection hole 4.2.

[0051] After the above improvement, since the diameter of the second convex column 5.2 is smaller than that of the first convex column 5.1, after assembly, the upper end face of the first convex column 5.1 can prevent the sealing ring from shifting downward, and the connection area between the assembly space 4.1 of the sleeve 4 and the connection hole 4.2 is used to prevent the sealing ring from moving upward. The position of the sealing ring is stable, and it can stably and effectively play a sealing role, making the device operate reliably.

[0052] As an improvement of the present utility model, the inner side of the outer shell 1 has a receiving cavity 1.1, and the bottom side wall of the receiving cavity 1.1 is provided with a thinning area 1.11 that tapers outward radially. A convex platform 1.2 is formed between the thinning area 1.11 and the receiving cavity 1.1;

[0053] An outer edge 3.1 that is in clearance fit with the thinning area 1.11 is formed on the outer periphery of the static iron core 3. The static iron core 3 enters from the bottom of the receiving cavity 1.1 until the upper end of the outer edge 3.1 abuts against the bottom end of the convex platform 1.2,

[0054] The upper end of the valve seat 2 enters from the bottom of the receiving cavity 1.1 and abuts against the lower end face of the static iron core 3, and the outer periphery of the valve seat 2 is connected to the outer shell 1.

[0055] The sleeve 4 is also assembled in the accommodation cavity 1.1. A coil assembly is further arranged on the outer side of the sleeve 4. When the coil assembly is electrified, it drives the moving iron core 4.11 to move downward to cooperate with the static iron core 3. When the coil assembly is powered off, the valve core 7 can be driven by a resetting member (for example: a spring) to move upward and drive the valve core 7 to reset.

[0056] After the static iron core 3 is inserted into the bottom of the housing 1 until the upper end of the outer edge 3.1 abuts against the bottom of the boss 1.2, at this time, the valve seat 2 is inserted into the bottom of the housing 1, and the upper end surface of the valve seat 2 abuts against the bottom of the static iron core 3. After the connection between the valve seat 2 and the housing 1 is completed, the position of the static iron core 3 is also fixed, reducing the use of connection structures, making the device more compact and having a lower cost.

[0057] As an improvement of the present utility model, a fixing surface 2.2 is provided on the outer periphery of the upper end of the valve seat 2, and the fixing surface 2.2 is arranged such that the diameter gradually decreases from top to bottom to form an inclined fixing surface 2.2;

[0058] The bottom edge 1.3 of the housing 1 fixes the valve seat 2 by pressing on the fixing surface 2.2.

[0059] After the above improvement, after the upper end surface of the valve seat 2 abuts against the bottom end surface of the static iron core 3, the fixing surface 2.2 faces the bottom end surface of the housing 1. By inwardly spinning the position of the bottom edge 1.3 of the housing 1, the bottom edge 1.3 of the housing 1 is pressed on the fixing surface 2.2 of the valve seat 2, and thus the valve seat 2 can be fixed. The edge wrapping of the housing 1 and the valve seat 2 adopts integral spin riveting. Compared with the existing structure where the housing 1 and the valve seat 2 adopt multi-sided riveting, the integrity of the finished product of this application is higher, and the dimensional and geometric tolerances are easy to ensure.

[0060] The above is only the preferred embodiment of the present utility model, and the protection scope of the present utility model is not limited to the above embodiments. Any technical solution falling within the idea of the present utility model belongs to the protection scope of the present utility model. It should be noted that for those of ordinary skill in the art in this technical field, several improvements and retouches made without departing from the principle of the present utility model should also be regarded as within the protection scope of the present utility model.

Claims

1. A solenoid valve assembly, characterized in that, Comprising: A housing (1) provided with a valve seat (2), a stationary iron core (3), and a sleeve (4) thereon; The valve seat (2) is provided with a working port (2.1); An assembly space (4.1) inside the sleeve (4) is provided with a movable iron core (4.11), the movable iron core (4.11) is drivingly connected to a valve core (7), and the up-and-down movement of the movable iron core (4.11) drives the valve core (7) to cooperate with the working port (2.1); The lower end of the sleeve (4) is provided with a connection hole (4.2), and the connection hole (4.2) is inserted on a connection portion (5) of the stationary iron core (3); And a seal (6) is provided between the inner wall of the connection hole (4.2) and the connection portion (5).

2. The solenoid valve assembly according to claim 1, wherein: The connection portion (5) includes a first convex column (5.1) provided at the upper end of the stationary iron core (3) and a second convex column (5.2) provided on the first convex column (5.1); The diameter of the second convex column (5.2) is smaller than the diameter of the first convex column (5.1); The bottom end of the connection hole (4.2) is sleeved on the outside of the first convex column (5.1); The upper end of the second convex column (5.2) extends into the assembly space (4.1) and contacts the inner wall of the assembly space (4.1).

3. An electromagnetic valve assembly according to claim 2, characterized in that: The seal (6) is a sealing ring made of rubber, the sealing ring is sleeved on the outside of the second convex column (5.2) and abuts against the inner wall of the connection hole (4.2).

4. A solenoid valve assembly according to claim 1, characterized in that: The inner side of the housing (1) has a receiving cavity (1.1), the bottom side wall of the receiving cavity (1.1) is provided with a thinning area (1.11) that tapers radially outward, and a boss (1.2) is formed between the thinning area (1.11) and the receiving cavity (1.1); An outer edge (3.1) that is in clearance fit with the thinning area (1.11) is formed on the outer periphery of the stationary iron core (3), and the stationary iron core (3) enters from the bottom of the receiving cavity (1.1) until the upper end of the outer edge (3.1) abuts against the bottom end of the boss (1.2), [[ID= 5. The solenoid valve assembly according to claim 1, characterized in that: ​ ​

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