Multi-station electromagnet for low-flow hydraulic valve

Abstract

The utility model discloses a kind of multi-station electromagnet for small flow hydraulic valve, its electromagnet shell one end is equipped with n mounting slot, the other end is equipped with wire storage slot, n≥2, one electromagnet core assembly is equipped in each mounting slot, and it is communicated with wire storage slot by a wire slot, the two leads of electromagnet coil in each electromagnet core assembly pass through wire slot in corresponding mounting slot and enter wire storage slot;2n electrical pins are fixed on the connector body in electrical connector, connector gland is fixed with the one end of electromagnet shell equipped with wire storage slot, and connector body is pressed on electromagnet shell, the one end of each electrical pin close to wire storage slot is needle head, the one end of each electrical pin away from wire storage slot is interface, and the needle head of one electrical pin is electrically connected with each lead. The utility model is integrated by multiple electromagnet core assemblies and electrical pins, and the overall design size of small flow multi-path hydraulic valve can be significantly reduced, and the overall processing and manufacturing cost of small flow multi-path hydraulic valve is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of hydraulic valve technology, specifically relating to a multi-position electromagnet for a small flow hydraulic valve. Background Technology

[0002] In the field of hydraulic valves, hydraulic threaded cartridge valves are a very large branch, and a series of standard systems have been formed. A hydraulic threaded cartridge valve mainly consists of an electromagnet, a valve core, and a valve body. The electromagnet is used to drive the valve core. When it is necessary to drive a small-flow multi-way hydraulic valve, multiple electromagnets need to be used simultaneously. Therefore, how to reduce the overall design size and manufacturing cost of the small-flow multi-way hydraulic valve is a pressing issue. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the existing technology and propose a multi-position electromagnet for small flow hydraulic valves.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] This utility model discloses a multi-position electromagnet for a small-flow hydraulic valve, comprising a connector cover, an electromagnet housing, an electromagnet core assembly, and an electrical connector.

[0006] The electromagnet housing has n mounting slots arranged in an array at one end and a wire storage slot at the other end, where n≥2; each mounting slot has a wire passage slot at the end near the wire storage slot, and each mounting slot is connected to the wire storage slot through the corresponding wire passage slot.

[0007] Each mounting slot contains an electromagnet core assembly, which includes a stationary iron, an electromagnet coil, a spacer, a moving iron, and a push rod. The spacer is placed in the corresponding mounting slot and fixed to the stationary iron. The stationary iron is fixed to the mounting slot and has a central hole. The moving iron is placed inside the spacer and forms a sliding pair with the spacer. One end of the moving iron near the stationary iron is fixed to one end of the push rod, and the other end of the push rod passes through the central hole, forming a sliding pair with the central hole. An electromagnet coil is sleeved on the outside of the spacer, and the two leads of the electromagnet coil pass through the wire passage slots at the corresponding mounting slots and enter the wire storage slots. Both the stationary iron and the moving iron are made of magnetically conductive material.

[0008] The electrical connector includes a connector body and electrical pins. The connector body is fixed with 2n electrical pins. The connector cap presses the connector body against the end of the electromagnet housing with a wire storage slot and fixes it to the electromagnet housing with multiple mounting screws. The end of each electrical pin located in the wire storage slot is a needle tip, and the end located on the outside is an interface. Each lead wire is electrically connected to the needle tip of one electrical pin.

[0009] Preferably, the electromagnet housing is made of a magnetically conductive material.

[0010] Preferably, both the spacer and the push rod are made of magnetic shielding material.

[0011] Preferably, the electromagnet housing has two glue-filling holes spaced apart on one side. Both glue-filling holes are connected to the wire storage groove. Glue is filled into both the two glue-filling holes and the wire storage groove. Each glue-filling hole is connected to a glue-filling screw via a thread.

[0012] Preferably, an O-ring is provided between the stationary iron and the mounting groove.

[0013] This utility model has the following beneficial effects:

[0014] This invention features a compact structure. By integrating multiple electromagnet core components into a single electromagnet housing, it can be used in conjunction with a small-flow multi-way hydraulic valve. The integrated design of multiple electromagnet core components significantly reduces the overall size of the small-flow multi-way hydraulic valve, thereby lowering its overall manufacturing cost. Furthermore, this invention integrates multiple electrical pins onto a single connector body, simplifying wiring, reducing wiring complexity, and further lowering the overall manufacturing cost of the small-flow multi-way hydraulic valve. Attached Figure Description

[0015] Figure 1 This is an exploded view of the structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the structure of this utility model;

[0017] Figure 3 for Figure 2 Sectional view of AA;

[0018] Figure 4 This is a partial cross-sectional view of one end of the electromagnet shell in this utility model;

[0019] Figure 5 This is a schematic diagram of the structure of the other end of the electromagnet shell in this utility model;

[0020] Figure 6 for Figure 5 Sectional view of BB;

[0021] Figure 7 This is a cross-sectional view of the electromagnet core assembly in this utility model;

[0022] Figure 8 This is a schematic diagram of the electrical connector in this utility model;

[0023] Figure 9 for Figure 8 The right view;

[0024] Figure 10 for Figure 8 The left view;

[0025] Figure 11 This is a structural diagram of the present invention when two electromagnet core assemblies are provided;

[0026] Figure 12 This is a structural diagram of the present invention when it is equipped with three electromagnet core assemblies;

[0027] Figure 13 This is a structural diagram of the present invention when it is equipped with five electromagnet core assemblies;

[0028] Figure 14 This is a structural diagram of the present invention when it is equipped with six electromagnet core assemblies. Detailed Implementation

[0029] The present invention will now be further described with reference to the accompanying drawings.

[0030] like Figure 1 , Figure 2 and Figure 3 As shown, this utility model discloses a multi-position electromagnet for a small-flow hydraulic valve, including a connector cover 1, an electromagnet housing 4, an electromagnet core assembly 5, and an electrical connector 6.

[0031] like Figure 4 , Figure 5 and Figure 6 As shown, one end of the electromagnet housing 4 has n mounting slots 42 arranged in an array, and the other end has a wire storage slot 44, and n≥2; each mounting slot 42 has a wire passage slot 43 at the end near the wire storage slot 44, and each mounting slot 42 is connected to the wire storage slot 44 through the corresponding wire passage slot 43; wherein, the electromagnet housing 4 is made of a magnetically conductive material, such as cast iron or steel.

[0032] Each mounting slot 42 contains an electromagnet core assembly 5, such as Figure 7 As shown, the electromagnet core assembly 5 includes a stationary iron 51, an electromagnet coil 53, a spacer 55, a moving iron 56, and a push rod 57. The spacer 55 is placed in the corresponding mounting groove 42 and fixed to the stationary iron 51. The stationary iron 51 is fixed to the mounting groove 42 and has a central hole. The moving iron 56 is placed inside the spacer 55 and forms a sliding pair with the spacer 55. One end of the moving iron 56 near the stationary iron 51 is fixed to one end of the push rod 57, and the other end of the push rod 57 passes through the central hole and forms a sliding pair with the central hole. The electromagnet coil 53 is sleeved on the outside of the spacer 55. The two leads 54 of the electromagnet coil 53 pass through the wire passage 43 at the corresponding mounting groove 42 and enter the wire storage groove 44. The stationary iron 51 and the moving iron 56 are both made of magnetically conductive material, such as 12L15, while the spacer 55 and the push rod 57 are both made of magnetically shielding material, such as stainless steel 304 or stainless steel 316.

[0033] like Figure 8 , Figure 9 and Figure 10 As shown, the electrical connector 6 includes a connector body 61 and electrical pins 62. 2n electrical pins 62 are fixed on the connector body 61 in an array. The connector cover 1 presses the connector body 61 against one end of the electromagnet housing 4 where a wire storage groove 44 is provided, and fixes it to the electromagnet housing 4 by multiple mounting screws 3. The end of each electrical pin 62 located in the wire storage groove 44 is a needle tip, and the end located on the outside is an interface. Each lead wire 54 is electrically connected to the needle tip of one electrical pin 62.

[0034] Among them, such as Figure 11 , Figure 12 , Figure 13 and Figure 14 As shown, this utility model has various specifications with different numbers of electromagnet core assemblies 5 to suit small flow hydraulic valves with different circuits.

[0035] As a preferred embodiment, the electromagnet housing 4 has two spaced glue-filling holes 41 on one side. Both glue-filling holes 41 are connected to the wire storage groove 44. Glue is poured into the wire storage groove 44 through the two glue-filling holes 41. After the glue filling is completed, each glue-filling hole 41 is connected to a glue-filling screw 2 by thread, thereby improving the electrical IP protection level of the electromagnet.

[0036] In a preferred embodiment, an O-ring 52 is provided between the stationary iron 51 and the mounting groove 42. The O-ring 52 is used to isolate the electromagnet coil 53 from the external atmospheric environment.

[0037] The working principle of a multi-position electromagnet for a small-flow hydraulic valve according to this utility model is as follows:

[0038] In the initial state, the connector cap 1 is not fixed to the electromagnet housing 4 by the mounting screws 3. The end of the electromagnet housing 4 with the mounting groove 42 is connected to the valve body. The connector cap 1 and the valve body are fixed to both ends of the electromagnet housing 4 by the mounting screws 3. The connector cap 1 presses the connector body 61 against the end of the electromagnet housing 4 with the wire storage groove 44. The end of each push rod 57 away from the moving iron 56 contacts a valve core inside the valve body. Each valve core is connected to the valve body via a compression spring. The connector cap 1 and the valve body are fixed to both ends of the electromagnet housing 4. After the end is fixed, each compression spring is in a compressed state. In each electromagnet core assembly 5, when the electromagnet coil 53 obtains external input current through the corresponding two electrical connectors, a magnetic field is generated. The stationary iron 51 and the moving iron 56 are magnetized by the magnetic field and attract each other, causing the moving iron 56 to drive the push rod 57 to move closer to the stationary iron 51. This causes the push rod 57 to drive the corresponding valve core to move. When the electromagnet coil 53 is de-energized, the magnetic field disappears, the magnetic force between the stationary iron 51 and the moving iron 56 disappears, and the valve core is reset under the restoring force of the corresponding compression spring.

Claims

1. A multi-position electromagnet for a small-flow hydraulic valve, comprising a connector gland, an electromagnet housing, an electromagnet core assembly, and an electrical connector, characterized in that: The electromagnet housing has n mounting slots arranged in an array at one end and a wire storage slot at the other end, where n ≥ 2. Each mounting slot has a wire-passing slot at the end near the wire storage slot, and each mounting slot communicates with the wire storage slot through the corresponding wire-passing slot. Each mounting slot contains an electromagnet core assembly, which includes a stationary iron, an electromagnet coil, a spacer, a moving iron, and a push rod. The spacer is placed in the corresponding mounting slot and fixed to the stationary iron. The stationary iron is fixed to the mounting slot and has a central hole. The moving iron is placed inside the spacer, forming a sliding pair with the spacer, and the end of the moving iron near the stationary iron is fixed to one end of the push rod. The other end passes through the central hole, forming a sliding pair with the central hole; an electromagnet coil is sleeved on the outside of the spacer, and the two leads of the electromagnet coil pass through the wire slots at the corresponding mounting slots and enter the wire storage slots; wherein, both the stationary iron and the moving iron are made of magnetically conductive material; the electrical connector includes a connector body and electrical pins, and 2n electrical pins are fixed on the connector body. The connector cover presses the connector body against the end of the electromagnet housing with the wire storage slot, and fixes it to the electromagnet housing with multiple mounting screws. The end of each electrical pin located in the wire storage slot is a needle tip, and the end located on the outside is an interface. Each lead is electrically connected to the needle tip of an electrical pin.

2. The multi-position electromagnet for a small-flow hydraulic valve according to claim 1, characterized in that: The electromagnet's outer shell is made of a magnetically conductive material.

3. The multi-position electromagnet for a small-flow hydraulic valve according to claim 1, characterized in that: Both the spacer and the push rod are made of magnetic shielding material.

4. The multi-position electromagnet for a small-flow hydraulic valve according to claim 1, characterized in that: The electromagnet housing has two glue-filling holes spaced apart on one side. Both glue-filling holes are connected to the wire storage groove. Glue is filled into both the two glue-filling holes and the wire storage groove. Each glue-filling hole is connected to a glue-filling screw via a thread.

5. The multi-position electromagnet for a small-flow hydraulic valve according to claim 1, characterized in that: An O-ring is provided between the stationary iron and the mounting groove.

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