CN217234571U

CN217234571U - Electromagnetic valve

Info

Publication number: CN217234571U
Application number: CN202122705832.1U
Authority: CN
Inventors: 不公告发明人
Original assignee: Zhejiang Sanhua Automotive Components Co Ltd
Current assignee: Zhejiang Sanhua Automotive Components Co Ltd
Priority date: 2021-11-04
Filing date: 2021-11-04
Publication date: 2022-08-19
Anticipated expiration: 2031-11-04

Abstract

The utility model provides an electromagnetic valve, includes valve body, case subassembly, quiet iron core with valve body fixed connection, the valve body has inside valve chamber, and at least part the case subassembly is located inside valve chamber forms at least part inner wall of inside valve chamber is the guide part, the case subassembly includes the piston, at least part peripheral surface of piston with but the sliding fit is configured to between the guide part. So set up, the direction function of the case subassembly of this solenoid valve is realized by the guide part cooperation of valve body, quiet iron core and valve body fixed connection, and this quiet iron core does not integrate the structural part who provides the direction function, and the structure can be simplified to can effectively reduce magnetically soft alloy's material cost, and then be favorable to reducing the manufacturing cost of solenoid valve.

Description

Electromagnetic valve

Technical Field

The utility model relates to an automobile parts technical field, concretely relates to solenoid valve.

Background

In the automotive field, solenoid valves are control switches in automotive air conditioning systems or vehicle heat pump systems. The quiet iron core and the case guide structure formula structure as an organic whole of current solenoid valve, this integral type structure adopt soft magnetic alloy to make to quiet iron core produces the electromagnetic force when the coil circular telegram. Based on the limitation of higher cost of soft magnetic alloy materials, the manufacturing cost of the electromagnetic valve is higher.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a solenoid valve is favorable to reducing solenoid valve manufacturing cost through configuration optimization.

The utility model provides a pair of electromagnetic valve, including valve body, case subassembly, quiet iron core with valve body fixed connection, the valve body has inside valve pocket, at least part the case subassembly is located inside valve pocket forms the at least partial inner wall of inside valve pocket is the guide part, the case subassembly includes the piston, at least part peripheral surface of piston with but the configuration is sliding fit between the guide part.

So set up, the direction function of the case subassembly of this solenoid valve is realized by the guide part cooperation of valve body, quiet iron core and valve body fixed connection, and this quiet iron core does not integrate the structural part who provides the direction function, and the structure can be simplified to can effectively reduce magnetically soft alloy's material cost, and then be favorable to reducing the manufacturing cost of solenoid valve.

Drawings

FIG. 1 is a schematic view of a solenoid valve according to an embodiment;

FIG. 2 is a cross-sectional view taken at section A-A of FIG. 1;

FIG. 3 is an enlarged view of portion B of FIG. 2;

FIG. 4 is a schematic structural view of the valve body shown in FIG. 1;

FIG. 5 is an axial cross-sectional view of FIG. 4;

FIG. 6 is a schematic view of the static core structure shown in FIG. 1;

FIG. 7 is an axial cross-sectional view of FIG. 6;

FIG. 8 is a partial schematic view of a solenoid valve according to a second embodiment.

In the figure:

the valve body 1, the internal valve cavity 11, the guide portion 111, the first valve port 12, the first passage 13, the second passage 14, the concave mounting portion 15, the internal thread 151, the second seal groove 152, the second seal 16, the valve core assembly 2, the piston 21, the second valve port 211, the through flow channel 212, the concave housing cavity 213, the first elastic member 22, the first seal gasket 23, the pressing plate 24, the first seal 25, the iron core assembly 3, the stationary iron core 31, the through hole 311, the flange 312, the second seal groove 3121, the flange 312a, the movable iron core 32, the second elastic member 33, the second seal gasket 34, the connecting rod 35, the mounting portion 351, the rim 352, the pressing ring 36, the external thread 361, and the coil assembly 4.

Detailed Description

In order to make the technical solutions of the present invention better understood, the present invention is further described in detail with reference to the accompanying drawings and specific embodiments.

Without loss of generality, the present embodiment will be described with respect to the solenoid valve shown in the drawings, and the specific configuration and mechanism of action thereof will be described in detail. It should be understood that the principle of adapting the coil assembly and the core assembly of the solenoid valve is not the core invention of the present application and can be implemented by those skilled in the art based on the prior art, so that the solenoid valve claimed in the present application is not limited to the essential limitations.

Referring to fig. 1 and 2, fig. 1 is a schematic view of a solenoid valve according to the present embodiment, and fig. 2 is a sectional view taken at a cut-away position a-a in fig. 1.

The electromagnetic valve comprises a valve body 1, a valve core assembly 2, an iron core assembly 3 and a coil assembly 4. The coil assembly 4 is energized, and the movable iron core of the iron core assembly 3 displaces to close or open the valve, for example, when the normally open type electromagnetic valve shown in fig. 2 is energized and closed, the moving direction of the movable iron core 32 faces the valve port. Of course, in the case of a normally closed solenoid valve, when the solenoid valve is energized and opened, the moving direction of the plunger 32 is away from the valve port.

Wherein, the iron core assembly 3 includes static iron core 31 and movable iron core 32, and both axial are relative to each other and are provided with second elastic component 33 between the two, and under the normality, this second elastic component 33 can precompress and set up between static iron core 31 and movable iron core 32 to movable iron core 32 keeps the open valve state. The coil assembly 4 is sleeved on the periphery of the core assembly 3, based on the magnetic flux generated after the energization, the movable iron core 32 moves towards the stationary iron core 31, and the second sealing gasket 34 at the working end seals the second valve port 211 on the piston 21. Please refer to fig. 3, which is an enlarged view of the portion B of fig. 2.

In this scheme, along the axial of solenoid valve, quiet iron core 31 is compared and is located 1 one side that is close to the valve body in moving iron core 32, also, and quiet iron core 31 is close valve body 1 and sets up, moves iron core 32 and keeps away from valve body 1 and sets up. At least part of the stationary core 31 protrudes from the coil block 4 and is fixed to the valve body 1.

As shown in the figure, a connecting rod 35 is fixed at one end of the movable iron core 32 facing the stationary iron core 31, the connecting rod 35 extends through a middle through hole 311 of the stationary iron core 31, and a second gasket 34 adapted to the second valve port 211 is fixed at the extending end of the connecting rod 35.

In a specific implementation, the protruding end of the connecting rod 35 may be provided with a gasket mounting portion 351, and a bendable edge 352 is formed at an outer edge of the mounting portion 351, and during assembly, the second gasket 34 may be first placed in the mounting portion 351, and then the edge 352 is bent inward as shown in fig. 3. The fixation of the second gasket 34 is achieved on the basis of a riveting process. Of course, in other implementations, the second gasket 34 may be secured in other manners.

Wherein, the valve body 1 is provided with an inner valve cavity 11, and the valve core component 2 is arranged in the inner valve cavity 11; as shown in fig. 2, a part of the inner wall forming the inner valve chamber 11 is a guide portion 111 for guiding the movement of the piston 21. It will be understood that the axial dimension of the guide 111 relative to the internal valve chamber 11 is not limited to the dimensional scale shown in the drawings; here, the partial outer peripheral surface of the piston 21 and the guide portion 111 are configured to be in sliding engagement to satisfy the operational displacement of the piston 21 and a good guide function.

The valve core assembly 2 comprises a piston 21 and a first elastic member 22, the first elastic member 22 is axially arranged between the piston 21 and the valve body 1, and the first elastic member 22 is in a compressed state and is used for providing a reset acting force in the opening process of the valve port. Specifically, the piston 21 has an axial through flow channel 212, and the outer periphery of the through flow channel 212 at the end opposite to the first port 12 is provided with a first sealing gasket 23, and the first sealing gasket 23 can be engaged with or disengaged from the first port 12 under the driving of the piston 21. In a specific implementation, the first seal 23 may be fixed to the end of the piston 21 by a pressing piece 24.

Of course, in other embodiments, the second sealing pad 23 may be fixed to the piston 21 in other manners.

As shown in fig. 2 and 3, a second valve port 211 is formed at the opposite end of the through flow passage 212 to the core assembly 3 to cooperate with a second sealing gasket 34 at the working end of the plunger 32, and the second sealing gasket 34 can be engaged with or disengaged from the second valve port 211 by the driving of the plunger 32.

As shown in fig. 2 and 3, the piston 21 has an inner concave chamber 213, and the inner concave chamber 213 is formed by being inwardly recessed from an axial end surface of the piston 21 opposite to the stationary core 31 in the axial direction of the solenoid valve, so as to form a pressure medium acting chamber at the initial stage of the valve operation. In other specific implementations, the concave cavity may also be formed by being recessed inward from an axial end surface of the stationary core 31 opposite to the piston 21 (not shown in the figure), and of course, the concave cavity may also be formed by being recessed inward from the two opposite axial end surfaces (not shown in the figure), which may also achieve the function of forming the pressure medium acting cavity.

The valve body 1 has a first valve port 12, a first passage 13 and a second passage 14, the first passage 13 is communicated with the internal valve chamber 11, the second passage 14 can be communicated with the internal valve chamber 11 through the first valve port 12, that is, in the valve-opening state, when the second gasket 34 is separated from the first valve port 12, the second passage 14 is communicated with the internal valve chamber 11 through the first valve port 12.

In the present embodiment, the piston 21 has a first seal groove formed by being recessed inward from the outer circumferential surface of the piston 21 in the radial direction of the piston 21, a first seal 25 is provided in the first seal groove, and the first seal 25 is compressed between the first seal groove and the guide portion to establish a seal between the piston 21 and the guide portion 111. It should be understood that the adapting portion of the piston 21 for the guide portion 111 is not limited to being disposed at the end of the piston opposite to the stationary core 31, and may be disposed at a position axially intermediate the piston 21 according to the design requirements of a specific product.

Like this, the case direction function of this solenoid valve is realized by the cooperation of valve body 1, and the quiet iron core 31 that is fixed in valve body 1 cooperates with movable iron core 32 and reaches the on-off control of solenoid valve, and based on quiet iron core 31 does not integrate the characteristics that have the direction functional structure, the structure can be simplified to can reduce magnetically soft alloy's material cost, thereby be favorable to reducing the cost of solenoid valve.

Please refer to fig. 2, fig. 4 and fig. 5 together, wherein fig. 4 is a structural schematic diagram of the valve body, and fig. 5 is an axial sectional view of fig. 4.

As shown in the figure, the valve body 1 includes the concave installation portion 15, regarding the valve body 1, an installation cavity formed by the concave installation portion 15 is communicated with the internal valve cavity 11 of the valve body 1, the installation cavity is closer to the static iron core 31 than the internal valve cavity 11 along the axial direction of the electromagnetic valve, and the end of the static iron core 31 extending out of the coil assembly 4 forms a fixed end, specifically, refer to fig. 6 and fig. 7 together, where fig. 6 is a structural schematic diagram of the static iron core, and fig. 7 is an axial sectional view of fig. 6.

As shown, the fixing end has a flange 312 extending radially outward, the flange 312 can be attached to the bottom wall of the concave mounting portion 15, and the concave mounting portion 15 has an internal thread 151 disposed on the outer peripheral wall thereof, and the flange 312 is axially pressed and fixed by a pressing ring 36 sleeved on the outer side of the stationary core 31. Specifically, the inner diameter of the clamp ring 36 is smaller than the outer diameter of the flange 312, and the flange 312 is pressed and fixed between the clamp ring 36 and the bottom wall of the concave mounting portion 15 by the external thread 361 on the outer peripheral surface of the clamp ring and the internal thread 151 of the concave mounting portion 15, so as to press and fix the flange 312 at the fixed end of the stationary core 31.

In order to further improve the sealing performance, as shown in fig. 2, 4 and 5, the concave mounting portion 15 has a second sealing groove 152 formed by recessing inward from the bottom wall thereof along the axial direction of the valve body 1, and a second sealing element 16 is disposed in the second sealing groove 152; thus, when the flange 312 of the stationary core 31 is pressed, the second seal member is compressed between the flange 312 of the fixed end and the second seal groove 152, and the second seal member 16 can establish a reliable seal at the connecting position of the stationary core 31 and the valve body 1.

Of course, the sealing relationship between the stationary core 31 and the valve body 1 may be other structures. For example, but not limited to, another embodiment shown in fig. 8, a second sealing groove 3121 may also be provided on the stationary core 31, and a second sealing member 16 is provided in the second sealing groove 3121, specifically, in the axial direction of the solenoid valve, the stationary core 31 has a second sealing groove 3121 formed by recessing inward from the lower end surface of the fixed end of the stationary core 31, the lower end surface is defined as the end surface in the axial direction of the solenoid valve, the fixed end is opposite to the piston 21 and is close to the piston 21, and the second sealing member 3121 is compressed between the bottom wall of the recessed mounting portion 15 and the second sealing groove 3121, so that a reliable seal between the stationary core 31 and the valve body 1 can also be established. Here, the partial schematic of the solenoid valve shown in fig. 8 is the same as the region shown in fig. 3, and the same functional configurations and structures are illustrated with the same reference numerals in the drawing for clarity of the differences and connections between the two embodiments.

It should be noted that the fixed end of the stationary core 31 can be fixed in the concave mounting portion 15 in different manners. For example, but not limited to, as shown in FIG. 8, an external thread through the outer peripheral surface of the flange 312a is coupled with an internal thread of the female mounting portion 15; in addition, the fixed end of the static iron core 31 can be bonded, riveted or welded with the concave mounting part 15.

In addition to providing the concave mounting portion 15 on the valve body 1 as a mounting base structure for the static core 31, a design may be adopted in which the surface of the valve body 1 facing the static core 31 is used as a mounting surface, and a lower end of the static core 31 extending out of the coil assembly 4 is formed as a fixed end and is directly fixedly connected to the mounting surface (not shown). It should be understood that it is within the scope of the present application as long as the reliable fixation of the stationary core is achieved while taking into account the features of the simplified structure.

The ordinal numbers "first" and "second" used herein are used only to describe a structure or acts of like function in the claims. It is to be understood that the use of the ordinal numbers "first" and "second" does not constitute an understandable limitation on the claimed technical solution.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that it is obvious to those skilled in the art that various modifications and improvements can be made without departing from the principle of the present invention, and these modifications and improvements should also be considered as the protection scope of the present invention.

Claims

1. The utility model provides an electromagnetic valve, includes valve body, case subassembly, quiet iron core, its characterized in that: the static iron core is fixedly connected with the valve body, the valve body is provided with an inner valve cavity, at least part of the valve core assembly is located in the inner valve cavity, at least part of the inner wall forming the inner valve cavity is a guide part, the valve core assembly comprises a piston, and at least part of the outer peripheral surface of the piston and the guide part are configured to be in sliding fit.

2. The electromagnetic valve according to claim 1, wherein the piston has a first seal groove formed by being recessed inward from an outer circumferential surface of the piston in a radial direction of the piston, and a first seal is provided in the first seal groove and compressed between the first seal groove and the guide portion.

3. The electromagnetic valve according to claim 1 or 2, wherein the valve body comprises a concave installation part, the concave installation part forms an installation cavity, the installation cavity is closer to the static iron core than the internal valve cavity along the axial direction of the electromagnetic valve, the static iron core comprises a fixed end, at least part of the fixed end is located in the installation cavity, and the fixed end is fixedly connected with the concave installation part.

4. The solenoid valve of claim 3 wherein said fixed end has external threads and said female mounting portion has internal threads, both of which are threadably secured; or the fixed end and the concave mounting part are fixedly bonded or welded.

5. The solenoid valve of claim 3 wherein said fixed end has a radially outwardly extending flange and said female mounting portion has internal threads; still include the clamp ring, the clamp ring suit is in the outside of quiet iron core, the internal diameter size of clamp ring is less than the external diameter size of flange to through its peripheral surface the external screw thread with the internal thread adaptation of indent installation department, the flange is pressed to be supported and is fixed in the clamp ring with between the diapire of indent installation department.

6. The electromagnetic valve according to claim 3, wherein the concave mounting portion has a second sealing groove formed by being recessed inward from a bottom wall of the concave mounting portion in an axial direction of the electromagnetic valve, and a second sealing member is disposed in the second sealing groove and is compressed between the fixed end and the second sealing groove;

or, the static iron core is provided with a second sealing groove, the second sealing groove is formed by inwards recessing the lower end surface of the fixed end in the axial direction of the electromagnetic valve, a second sealing element is arranged in the second sealing groove, and the second sealing element is compressed between the inwards recessing installation part and the second sealing groove.

7. The electromagnetic valve according to claim 1 or 2, wherein the stationary core includes a fixed end, a surface of the valve body opposite to the stationary core is a mounting surface, and the fixed end is fixedly connected to the mounting surface.

8. The electromagnetic valve according to claim 1 or 2, characterized in that the piston has an axial through flow channel, the valve body has a first valve port, the outer periphery of the through flow channel at the opposite end of the through flow channel to the first valve port is provided with a first sealing gasket, and the first sealing gasket can be engaged with or separated from the first valve port under the driving of the piston; the opposite ends that link up the runner with quiet iron core form the second valve mouth, the solenoid valve still includes moves the iron core, the work end that moves the iron core is provided with the sealed pad of second, the sealed pad of second can move under the drive of iron core with the joint of second valve mouth or separation.

9. The solenoid valve as claimed in claim 8 further comprising a first resilient member disposed axially between the piston and the valve body, the first resilient member being in a compressed state; the second elastic piece is axially arranged between the movable iron core and the static iron core and is in a compressed state.

10. The solenoid valve as claimed in claim 9, wherein the valve body further has a first passage and a second passage, the first port being capable of communicating the first passage and the second passage; the piston and/or the static iron core are/is provided with an inwards concave cavity which is formed by inwards sinking one or both of the axial end surfaces of the piston and the static iron core along the axial direction of the electromagnetic valve, and the through flow channel can be communicated with the inwards concave cavity and the second channel.