CN111649019A

CN111649019A - Vehicle electromagnetic valve with buffer structure

Info

Publication number: CN111649019A
Application number: CN201910160523.5A
Authority: CN
Inventors: 李世筌
Original assignee: Actron Technology Corp
Current assignee: Actron Technology Corp
Priority date: 2019-03-04
Filing date: 2019-03-04
Publication date: 2020-09-11

Abstract

A vehicle electromagnetic valve with a buffer structure comprises a first iron core and a second iron core. The first iron core is provided with a butting surface, a containing hole and a buffer sealing element, and the containing hole is formed in the first iron core in a sunken mode through the butting surface; the buffer sealing element is arranged in the accommodating hole. The second iron core is provided with a hollow shell, a sealing barrel, an elastic component and a rear end cover. The sealing barrel piece is movably accommodated in the outer shell and exposed out of one end of the outer shell, the rear end cover is fixed at the other end of the outer shell, the elastic assembly is accommodated in the outer shell, two ends of the elastic assembly are respectively abutted against the sealing barrel piece and the rear end cover, the outer diameter of the exposed part of the sealing barrel piece is smaller than the inner diameter of an inlet of the accommodating hole, and when the first iron core and the second iron core are close to each other, the outer end face of the sealing barrel piece is abutted against the buffering sealing piece.

Description

Vehicle electromagnetic valve with buffer structure

Technical Field

The invention relates to a vehicle electromagnetic valve with a buffer structure, in particular to an electromagnetic valve structure of an anti-deadlock brake system for an automobile.

Background

With the development of automobile manufacturing technology, automobiles are generally equipped with an Anti-lock braking system (ABS) to prevent the vehicle from being out of control and improve the safety of the vehicle. Even anti-deadlock braking systems are applied to braking systems of locomotives. The deadlock-proof brake system is provided with an electromagnetic valve or a vehicle electromagnetic valve on a brake pipeline, when the wheel brake oil pressure is sensed to be too large or deadlock, the electromagnetic valve is electrified to start the vehicle electromagnetic valve to control the brake pipeline, and the pressure in the brake cylinder is reduced to continue rising. The wheels do not lock and slip.

Because the magnetic force of the vehicle electromagnetic valve is increased after the vehicle electromagnetic valve is electrified, when the two iron cores are abutted, a great collision force is generated, and the impact and uncomfortable noise of the assembly are caused. How to reduce the impact of the component to prolong the service life of the component; on the other hand, how to reduce the noise of the electromagnetic valve for vehicle to provide better driving feeling is a subject to be improved.

Disclosure of Invention

An embodiment of the present invention provides a vehicle solenoid valve with a buffer structure, which is used to solve the above problems.

In order to solve the above-mentioned problems, an embodiment of the present invention provides a vehicular solenoid valve with a buffering structure, which includes a first core and a second core. The first iron core is provided with an abutting surface, a containing hole and a buffer sealing element, and the containing hole is formed in the first iron core in a concave mode through the abutting surface; the buffer sealing piece is arranged in the accommodating hole. The second iron core is provided with a hollow outer shell, a sealing barrel part, an elastic component and a rear end cover, the sealing barrel part is movably contained in the outer shell and exposed at one end of the outer shell, the rear end cover is fixed at the other end of the outer shell, the elastic component is contained in the outer shell, two ends of the elastic component are respectively abutted against the sealing barrel part and the rear end cover, the outer diameter of the exposed part of the sealing barrel part is smaller than the inner diameter of an inlet of the containing hole, and when the first iron core and the second iron core are close to each other, the outer end face of the sealing barrel part is abutted against the buffer sealing part.

Preferably, according to an embodiment of the present invention, in the vehicular electromagnetic valve with a buffering structure, the first iron core is movable, the second iron core is stationary, the sealing barrel has an outer end surface and a stopping protruding ring, the stopping protruding ring protrudes from the outer end surface toward the first iron core, and when the first iron core moves toward the second iron core, the stopping protruding ring of the sealing barrel abuts against the buffering sealing member.

Preferably, in an embodiment of the present invention, the electromagnetic valve with a buffering structure for a vehicle further includes an outer sealing ring, the outer casing of the second iron core has an annular receiving portion protruding toward the first iron core, the outer sealing ring is received in the annular receiving portion, the outer sealing ring protrudes out of the annular receiving portion, a central diameter of the outer sealing ring is larger than the receiving hole, and when the first iron core and the second iron core are close to each other, the outer sealing ring abuts against the abutting surface of the first iron core.

Preferably, according to an embodiment of the present invention, the accommodating hole has an outer hole portion and an inner hole portion, an inner diameter of the inner hole portion is smaller than an inner diameter of the outer hole portion, a portion of the cushion seal is disposed in the inner hole portion, and another portion of the cushion seal is disposed in the outer hole portion.

Preferably, according to an embodiment of the present invention, the sealing cylinder has a front cylinder and a rear cylinder, the rear cylinder is connected to the front cylinder, and an outer diameter of the rear cylinder is larger than an outer diameter of the front cylinder.

Preferably, according to an embodiment of the present invention, the second iron core further includes an inner sealing ring, the inner sealing ring is sleeved on the periphery of the front barrel and abuts against the rear barrel, and the inner sealing ring abuts against an inner side wall surface of the outer shell.

Preferably, according to an embodiment of the present invention, in the vehicular electromagnetic valve with a buffer structure, an outer diameter of the front cylinder of the sealed cylinder is smaller than an inner diameter of the outer hole of the accommodating hole, and after the sealed cylinder and the abutting surface of the first iron core abut against each other, a gap is formed between an outer periphery of the front cylinder and an inner wall surface of the outer hole of the accommodating hole.

Preferably, according to an embodiment of the present invention, the sealing barrel further includes an outward protruding wing portion, the outward protruding wing portion protrudes from the outer end surface of the sealing barrel along a direction parallel to the abutting surface, an outer diameter of the outward protruding wing portion is smaller than the accommodating hole, and when the first iron core and the second iron core approach each other and the outer end surface abuts against the buffer sealing member, the outward protruding wing portion abuts against the outer shell of the second iron core.

Preferably, according to an embodiment of the present invention, the second iron core further includes an inner stopping cylinder, the inner stopping cylinder is located in the outer casing and located between the sealing cylinder and the rear end cover, and the elastic component penetrates through the inner stopping cylinder.

Preferably, according to an embodiment of the present invention, the inner stop cylinder includes an inner lining portion and an outer edge portion, the outer edge portion is connected to one end of the inner lining portion and abuts against an outer end edge of the outer housing, and the rear end cap fixes the outer edge portion to the outer housing.

Preferably, according to an embodiment of the present invention, the vehicular electromagnetic valve with a buffering structure further includes a silencing element, the silencing element is close to the rear end cover and has an airflow guiding column, the rear end cover has a through hole, and the airflow guiding column passes through the through hole and extends into the outer shell of the second core.

The invention has the beneficial effects that in the adsorption process of the first iron core and the second iron core, the elastic component can absorb impulse, provide a buffer function and reduce the collision force and noise generated when the first iron core and the second iron core are abutted to each other. The sealing barrel part provided by the invention has a buffering structure, so that the service life of the buffering sealing part can be prolonged.

For a better understanding of the nature and technical aspects of the present invention, reference should be made to the following detailed description of the invention, which is to be read in connection with the accompanying drawings, which are provided for purposes of illustration and description and are not intended to be limiting.

Drawings

Fig. 1 is a sectional view of a first embodiment of a vehicular solenoid valve having a shock-absorbing structure according to the present invention.

Fig. 2 is a partially enlarged view of fig. 1.

Fig. 3 is a partial enlarged view of fig. 1 after energization.

Fig. 4 is a sectional view of a second embodiment of a vehicular solenoid valve having a shock-absorbing structure according to the present invention.

Fig. 5 is a partially enlarged view of fig. 4.

Fig. 6A is a partial enlarged view of fig. 4 after the energization.

Fig. 6B is a partially enlarged view of the first core continuously operating after the energization in fig. 4.

Fig. 7 is a sectional view of a third embodiment of a vehicular solenoid valve having a shock-absorbing structure according to the present invention.

Fig. 8 is a partially enlarged view of fig. 7.

Fig. 9 is a partial enlarged view of fig. 7 after energization.

Detailed Description

[ first embodiment ]

Referring to fig. 1, a cross-sectional view of a first embodiment of a vehicular solenoid valve with a buffering structure according to the present invention is shown. The invention provides a vehicle electromagnetic valve 100 with a buffer structure, which comprises a valve seat 1 and a valve body 2. The valve body 2 is connected to the valve seat 1. The valve body 2 accommodates a first iron core 3, a second iron core 5, and a coil assembly 4 wound around the first iron core 3 and the second iron core 5. For convenience of description, the air inlet end of the vehicular solenoid valve is referred to as the head end, i.e., the left end in fig. 1, and the air outlet end is referred to as the tail end, i.e., the right end in fig. 1.

A return spring 12 is arranged in the valve seat 1, and the return spring 12 is positioned at the front end of the first iron core 3. The tail end of the first iron core 3 faces the head end of the second iron core 5, and the tail end of the second iron core 5 is provided with a silencing piece 6. In the present embodiment, the first core 3 is a movable member, or may be called an armature (armature); the second core 5 is a stationary member, or may be referred to as a stationary core (core). The first core 3 and the second core 5 are made of a magnetic material, such as magnetically permeable stainless steel.

Please refer to fig. 2 to 3. The first core 3 has a contact surface 31, a receiving hole 32 and a buffer seal 33. The abutment surface 31 faces the second core 5. The receiving hole 32 is formed in the first core 3 by the abutting surface 31. The buffer sealing member 33 is disposed in the receiving hole 32, and the buffer sealing member 33 is made of a material capable of absorbing impact and can form a seal with the second core 5.

The receiving hole 32 of the present embodiment has an outer hole portion 320 and an inner hole portion 322, wherein the inner diameter of the inner hole portion 322 is smaller than the inner diameter of the outer hole portion 320. A portion of the cushion seal 33 is disposed in the inner hole portion 322, and another portion of the cushion seal 33 is disposed in the outer hole portion 320. The top face of the cushion seal 33 is lower than the abutment face 31 of the first core 3, in other words, the cushion seal 33 does not fill the accommodation hole 32.

The second core 5 of this embodiment has a hollow outer casing 51, a sealing cylinder 52, an elastic member 53, and a rear cover 54 (see fig. 1). The outer housing 51 is a metal housing and may be made of magnetically attractable material. Both ends of the outer case 51 are open. The sealing cylinder 52 is also hollow and has two open ends. The sealing cylinder 52 is movably accommodated in the outer casing 51, and a part of the sealing cylinder 52 is exposed out of one end of the outer casing 51, namely, the end facing the first iron core 3. The rear end cap 54 is fixed to the other end of the outer housing 51, that is, the end remote from the first core 3. The elastic element 53 is accommodated in the outer housing 51, and the elastic element 53 is a compression spring in this embodiment, but is not limited thereto. The elastic member 53 abuts the sealing cylinder 52 and the rear cover 54 at both ends thereof, respectively.

The rear end cap 54 of the present embodiment may be fixed to the outer housing 51 by, for example, a magnetic attraction method, a screw locking method, a snap-fit method, or a welding method. The rear end cap 54 may be made of a magnetic material and has permanent magnetism, so as to be attached to the outer casing 51 of the second core 5 for holding the elastic element 53 in the outer casing 51. The assembly steps of this embodiment are as follows, firstly, the sealing cylinder 52 is placed into the outer shell 51 of the second iron core 5, then the elastic component 53 of the compression spring is placed into the outer shell 51 of the second iron core 5, the outer shell 51 can attract the rear end cover 54 with permanent magnetism, then, the whole second iron core 5 and the coil assembly 4 are placed into a plastic mold to form the valve body 2 in a manner of embedding and ejecting, and the rear end cover 54 is fixed at the tail end of the outer shell 51 of the second iron core 5, thus completing the assembly steps.

Referring to fig. 4, the rear cover 54 of the present embodiment includes a through hole 540, and the silencer 6 includes an outer cover 61 and an airflow guiding column 62. The airflow guiding post 62 is integrally connected to the outer cover plate 61, and the airflow guiding post 62 extends into the through hole 540 of the rear end cover 54 and into the outer housing 51 of the second core 5.

One advantage of the above structure is that the sealing cylinder 52 of the second core 5 is exposed to the outer casing 51 in a protruding manner, and is closer to the first core 3, so that the magnetic flux between the first core 3 and the second core 5 can be increased when the power is first turned on, so as to accelerate the start-up action. In addition, when the first iron core 3 and the second iron core 5 approach each other, the sealing barrel 52 of the second iron core 5 abuts against the buffer sealing member 33 of the first iron core 3, and then the elastic component 53 can absorb some impulse in the process that the first iron core 3 continuously approaches the outer shell 51 of the second iron core 5, thereby providing a buffer function. Therefore, the present embodiment can design different spring coefficients and ensure the sealing force between the buffer sealing member 33 and the sealing cylinder member 52 according to the compression length between the buffer sealing member 33 and the sealing cylinder member 52 after the first iron core 3 and the second iron core 5 are contacted. The sealing cylinder 52 of the present invention together with the elastic member 53 provides a buffering effect, which can further extend the life of the buffering sealing member 33. In addition, the collision force and noise generated when the first core 3 and the second core 5 abut against each other can be reduced, and the service life of the structure of the electromagnetic valve 100 for a vehicle can be further increased.

The outer diameter of the sealing cylinder 52 of the present embodiment is smaller than the inner diameter of the inlet of the accommodating hole 32, that is, the sealing cylinder 52 can enter the accommodating hole 32 and abut against the buffer seal 33. When the first core 3 and the second core 5 approach each other, the outer end surface 5210 of the sealing cylinder 52 abuts against the cushion seal 33. More specifically, the first core 3 of the present embodiment is movable, and the second core 5 is stationary fixed in the valve body 2. The sealing cylinder 52 has an outer end surface 5210 and a stop protrusion ring 5211, and the stop protrusion ring 5211 protrudes from the outer end surface 5210 toward the first iron core 3. When the first iron core 3 moves toward the second iron core 5, the stop protrusion ring 5211 of the sealing barrel 52 abuts against the buffer sealing member 33, as shown in fig. 3.

As shown in fig. 2 and 3, the vehicular solenoid valve with a buffering structure according to the present embodiment further includes an outer sealing ring 55 disposed outside the outer shell 51 of the second core 5 to enhance the sealing effect. In order to hold the outer sealing ring 55, the outer housing 51 of the second core 5 has an annular accommodating portion 515 protruding toward the first core 3, and the outer sealing ring 55 is accommodated in the annular accommodating portion 515 in a sleeved manner. The outer seal ring 55 protrudes from the annular accommodating portion 515, and the center diameter of the outer seal ring 55 is larger than the accommodating hole 32. When the first core 3 and the second core 5 approach each other, the outer seal ring 55 abuts against the abutment surface 31 of the first core 3.

The sealing cylinder 52 of this embodiment has a front cylinder 521 and a rear cylinder 522. The rear barrel 522 is integrally connected to the front barrel 521. The outer diameter of the rear barrel 522 is larger than that of the front barrel 521. The second core 5 further has an inner sealing ring 524 disposed inside the outer shell 51 of the second core 5. Specifically, the inner seal ring 524 is fitted around the outer periphery of the front barrel 521 and abuts the rear barrel 522, and the inner seal ring 524 abuts an inner wall surface of the outer housing 51. The present embodiment includes three layers of sealing contact, in which the stop protrusion ring 5211 contacts the buffer seal 33; secondly, the outer seal ring 55 abuts against the abutment surface 31 of the first core 3; third, the inner seal ring 524 abuts against the inner wall surface of the outer case 51, thereby providing excellent sealing performance.

Referring to fig. 3, another advantage of this embodiment is that the outer diameter of the front barrel 521 of the sealing barrel 52 is smaller than the inner diameter of the outer hole portion 320 of the accommodating hole 32. When the sealing cylinder 52 abuts against the cushion seal 33 of the first core 3, a gap G is formed between the outer periphery of the front cylinder 521 and the inner wall surface of the outer hole 320 of the accommodating hole 32. Therefore, in the gap G between the accommodating hole 32 and the sealing cylinder 52 of the present embodiment, after the first iron core 3 and the second iron core 5 are abutted to each other, an air space is formed between the sealing cylinder 52 of the second iron core 5 and the first iron core 3, instead of a magnetic conductive material. For example, the gap G between the outer periphery of the seal barrel 52 and the inner wall surface of the outer bore portion 320 of the present embodiment may be 0.3 mm to 1.0 mm. This is advantageous in that the magnetic flux density is reduced before the first core 3 and the second core 5 approach each other and come into contact with each other. That is, the magnetic attraction force at the time of the quick abutment between the first core 3 and the second core 5 is reduced. Therefore, the collision force and noise generated when the first iron core 3 and the second iron core 5 are abutted to each other can be reduced, and the service life of the automotive electromagnetic valve structure can be prolonged.

[ second embodiment ]

Referring to fig. 4 to 6B, the main difference between the vehicular solenoid valve 100a with a buffering structure of the present embodiment and the first embodiment is that the sealing cylinder 52a further includes an external protruding wing portion 5213, and the external protruding wing portion 5213 protrudes from the external end surface 5210 of the sealing cylinder 52a along a direction parallel to the abutting surface 31. The outward protruding wing portion 5213 of the present embodiment is annular and extends outward in a direction perpendicular to the moving direction of the second core 5. The outer diameter of the external protruding wing portion 5213 is smaller than the accommodating hole 32, when the first iron core 3 and the second iron core 5 approach each other, the stopping protruding ring 5211 abuts against the buffer sealing member 33, and then the sealing cylinder 52a pushed by the buffer sealing member 33 moves toward the rear end cover 54 until the external protruding wing portion 5213 contacts the outer shell 51, as shown in fig. 6B.

Referring to fig. 6A and 6B, the present embodiment has an advantage in that the outer protruding wing portion 5213 can increase the stopping function and the air-tight effect. When the electromagnetic valve 100a for a vehicle is energized, the first iron core 3 and the second iron core 5 are magnetically conductive, and then the first iron core 3 is displaced toward the second iron core 5 until the buffer sealing member 33 of the first iron core 3 contacts the retaining protrusion ring 5211 of the sealing cylinder 52a of the second iron core 5, and then stops until the outer protrusion portion 5213 contacts the outer housing 51.

[ third embodiment ]

Referring to fig. 7 to 9, the main difference between the vehicular solenoid valve 100b with a buffering structure of the present embodiment and the first embodiment is that the second iron core 5 further includes an inner stopping tube 57, the inner stopping tube 57 is located inside the outer housing 51 and between the sealing tube 52 and the rear end cap 54, and the elastic component 53 penetrates through the inner stopping tube 57.

In a feasible implementation of the inner stop cylinder 57 of the present embodiment, the inner stop cylinder 57 includes an inner lining portion 571 and an outer edge portion 572, the outer edge portion 572 is connected to one end of the inner lining portion 571 and abuts against the outer edge of the outer housing 51, and the rear end cover 54 fixes the outer edge portion 572 to the outer housing 51.

Referring to fig. 9, in the vehicular electromagnetic valve 100b of the present embodiment, after the first iron core 3 and the second iron core 5 are energized, and after the first iron core 3 is magnetically conducted, the inner stopping cylinder 57 has an advantage of strengthening the stopping of the sealing cylinder 52, so that the sealing cylinder 52 is reliably abutted against the buffering sealing element 33.

In summary, the present invention has the beneficial effects that, in the adsorption process of the first iron core 3 and the second iron core 5, the elastic component 53 can absorb the impulse to provide the buffering function. The sealing cylinder 52 of the present invention together with the elastic member 53 provides a buffering effect, which can further extend the life of the buffering sealing member 33.

The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, so that equivalent technical changes made by using the present specification and the accompanying drawings are included in the scope of the present invention.

Claims

1. A vehicular solenoid valve having a cushion structure, comprising:

the first iron core is provided with an abutting surface, a containing hole and a buffer sealing member, and the containing hole is formed in the first iron core in a concave mode through the abutting surface; the buffer sealing piece is arranged in the accommodating hole; and

the second iron core is provided with a hollow outer shell, a sealing barrel piece, an elastic assembly and a rear end cover, the sealing barrel piece is movably contained in the outer shell and exposed at one end of the outer shell, the rear end cover is fixed at the other end of the outer shell, the elastic assembly is contained in the outer shell, two ends of the elastic assembly are respectively abutted against the sealing barrel piece and the rear end cover, the outer diameter of the exposed part of the sealing barrel piece is smaller than the inner diameter of the inlet of the containing hole, and when the first iron core and the second iron core are close to each other, the outer end face of the sealing barrel piece is abutted against the buffer sealing piece.

2. The vehicular solenoid valve according to claim 1, wherein the first iron core is movable, the second iron core is stationary, the sealing barrel has an outer end surface and a stop protruding ring, the stop protruding ring protrudes from the outer end surface toward the first iron core, and when the first iron core moves toward the second iron core, the stop protruding ring of the sealing barrel abuts against the buffer sealing member.

3. The vehicular solenoid valve according to claim 1, further comprising an outer sealing ring, wherein the outer housing of the second core has an annular receiving portion protruding toward the first core, the outer sealing ring is received in the annular receiving portion, the outer sealing ring protrudes from the annular receiving portion, a central diameter of the outer sealing ring is larger than the receiving hole, and when the first core and the second core are close to each other, the outer sealing ring abuts against the abutting surface of the first core.

4. The vehicular solenoid valve having a shock-absorbing structure according to claim 1, wherein said accommodation hole has an outer hole portion and an inner hole portion, an inner diameter of said inner hole portion is smaller than an inner diameter of said outer hole portion, a part of said cushion seal is disposed in said inner hole portion, and another part of said cushion seal is disposed in said outer hole portion.

5. The vehicular solenoid valve according to claim 4, wherein said seal barrel member has a front barrel and a rear barrel, said rear barrel being connected to said front barrel, said rear barrel having an outer diameter larger than that of said front barrel.

6. The vehicular solenoid valve according to claim 5, wherein the second core further comprises an inner sealing ring, the inner sealing ring is sleeved on the periphery of the front barrel and abuts against the rear barrel, and the inner sealing ring abuts against the inner side wall surface of the outer housing.

7. The vehicular electromagnetic valve having a shock-absorbing structure according to claim 5, wherein an outer diameter of the front cylindrical body of the sealed cylindrical member is smaller than an inner diameter of the outer hole portion of the housing hole, and when the contact surfaces of the sealed cylindrical member and the first core are in contact with each other, a gap is provided between an outer periphery of the front cylindrical body and an inner wall surface of the outer hole portion of the housing hole.

8. The vehicular electromagnetic valve having a shock-absorbing structure according to claim 1, wherein the seal cylinder further includes an outward-projecting wing portion that projects from the outer end surface of the seal cylinder in a direction parallel to the abutment surface, the outward-projecting wing portion having an outer diameter smaller than the receiving hole and abutting against the outer case of the second core when the first core and the second core approach each other and the outer end surface abuts against the shock-absorbing seal.

9. The vehicular solenoid valve according to claim 1, wherein said second core further comprises an inner stopper tube disposed in said outer housing and between said seal tube member and said rear end cap, wherein said elastic member passes through said inner stopper tube.

10. The vehicular solenoid valve according to claim 9, wherein the inner retainer comprises an inner portion and an outer edge portion, the outer edge portion is connected to one end of the inner portion and abuts against an outer edge of the outer housing, and the rear cover fixes the outer edge portion to the outer housing.

11. The vehicular solenoid valve according to claim 1, further comprising a noise reducing member which is adjacent to the rear end cap and has an air flow guide post, the rear end cap having a through hole, the air flow guide post passing through the through hole and extending into the outer case of the second core.